Infallible Witness | FULL EPISODE | The New Detectives

In Seattle, police hope a bloody handprint will point to the killer, but the stain is barely visible. Will investigators be able to focus the evidence? A new computer promises to read a murderer's mind. Can he really see the truth locked in the murderer's memory? Two bodies are found in the The clues in the California jungle are irregular and scarce to uncover the murderer. Police rely on a new laser technique when evidence cannot be seen with the naked eye. Investigators must use extraordinary means to find her as technology develops to unravel the clues she is providing

detectives

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infallible

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forensic science is constantly evolving from the discovery of the uniqueness of the human fingerprint to the ability to link a criminal to his crime through DNA profiling.

Technology continues to provide investigators with new weapons, but fingerprints and DNA evidence are only discovered in one percent. Of all the cases where reliable techniques fail, investigators must turn to cutting-edge technology to unearth unseen clues on the clear spring morning of May 14, 1995 in Kirkland Washington, outside Seattle, Randy Akal returned from work and noticed his neighbor's front door was propped up. open hello normally he wouldn't have given it much thought hello but he had noticed that the door was open when he left for work the night before everyone was home randy was a little worried and decided to see if everything was okay hello hello When he walked in The bedroom, a gruesome sight greeted his eyes: he found the body of a woman in her 30s lying in a pile at the foot of the bed, her head was covered with the top sheet and a t-shirt rolled up around her. blood from the neck stained the carpet beneath his horrified randy yes i would like to call 911 and an emergency detective tj group kirkland police responded to the call it was mother's day 1995 around 10 30 a.m. m.

In the morning I was getting ready to take my wife and daughter out for Mother's Day when, just before I left, I received a call from the Kirkland dispatch center and they asked me to immediately contact Sergeant Markle and the detective division to inform me that a suspicious death had occurred and that all

detectives

were being called in to investigate. When the police arrived at the apartment, they saw no signs of forced entry at first glance, there were none of the usual signs that a crime had been committed, the television, stereo and other valuable items were still in the condo, nothing was been altered once I arrived.

There and after obtaining the search warrant we entered the condominium and the first thing that caught my attention was how clean it was for a crime scene, it was very clean, immaculate, the murderer seemed to have been meticulous in covering his tracks, the Detectives set out to try to uncover the few clues they could. The case depended on their ability to uncover the secrets of the crime scene. A driver's license was found in a jean bag. The murdered woman was identified as Dawn Fairing, a student. of the Lutheran Bible Institute who had been living in the condominium for several months, autopsy evidence, including her body temperature and her state of rigor mortis, indicated that she had been murdered within the previous 24 hours.

Additional test results indicated that the victim had been sexually assaulted, but none of the culprit's DNA was found. The detective and his colleagues care

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y collected evidence from the scene by removing sheets and sections of blood-stained carpet. They hoped they might contain some clue to the identity of the killer. They also found tobacco and ashes near the bed. The victim did not smoke. left by the murderer but they were of little use, another piece of junk appeared that was more valuable while we were looking for evidence in the condominium we found a box of receipts and Don Fearing was a very meticulous person, he was very organized, he kept the receipts, he had her and his phone records They had saved some receipts, one of which was a receipt for 512 of 95.

It was during the late hours of the night that he purchased some groceries at a nearby Fred Meyer's store to determine the time of Faring's death and determine who he could having been with the police. went to the grocery store listed on the receipt, let me show him this photo and see if he recognizes this young lady. An employee recalled helping the victim careen. He had arrived close to closing time. He had seemed friendly and in good spirits. store alone along with this information and evidence gathered at the crime scene, investigators began piecing together the victim's final hours after leaving the store just before 10 p.m.

On May 12, she apparently went straight home and unpacked her groceries, putting herself at the Bible school fair. She kept track of every penny she spent, placed her receipt in the box in the hall closet, and then began baking a tray of brownies, possibly for a Mother's Day celebration. The next afternoon police estimated it took her a time to make the brownies and they found them. cut and arranged on a plate next to the stove retracing the steps of the fairing the investigators arrived at the estimated time of death specifying the moment of death they reduced the killer's window of opportunity but who killed at dawn fairing a careful scrutiny of the The crime scene revealed the faint traces of what could have been fingerprints and palm prints on the sheets, traces of the killer preserved in the victim's own blood, but there was no way to dust them off or get the prince out of the sheep.

The detectives needed to somehow make them clear enough to be useful. The evidence was passed. Continue with King County latent lab scientist Pat Warwick, when we opened the evidence, we could see that there was some type of bodily fluid on the sheet, but any discernible detail, any type of handprint or anything else, It was very, very difficult, the print was stained and weak, no. Someone had tried to remove the fingerprint from the fabric before and this one promised to be particularly difficult. Warwick believed his best hope might be to process the prince with amido black, a forensic dye that highlights organic proteins such as blood, but amido black was generally used on hard, non-porous surfaces and its use on fabrics could jeopardize this crucial piece.

Warwick asked the FBI for help, but they were unable to offer any advice beyond agreeing that amido black was the best approach if Warwick used amido black on the sheet fragment, the dye, and the distilled water rinses. They might well destroy the print, but if the process worked, Warwick would be breaking new ground in forensic analysis. Warwick was extremely careful, but it seemed that he was not careful enough when he dipped the fabric into the ink solution. His worst fears came true. The entire palm print sample and everything turned a dull shade of dark purple. Any hope of obtaining a legible print seemed lost.

Seattle authorities investigating the murder of Dawn Fairing feared the only forensic evidence, a palm print, was ruined, hoping to find another clue. The detectives questioned the victim's neighbors, was this a crime of opportunity or was the killer someone new and trustworthy enough to let in her door as the detectives' work progressed? There was a ray of hope in Pat Warwick's laboratory. He was relieved to see the excess dye. He began rinsing off the palm print while waiting for the amido black to dye the blood stains purple, but he also dyed the fabric light blue, making it difficult to discern the palm print from the weave of the fabric.

The confusion of the two patterns made for a clear analysis. Almost impossible, Warwick contacted his colleague Eric Bird, an expert in the field of digital imaging and enhancement at the Tacoma Police Department. Good Burgs' computers and high-tech cameras read the bloody palm print and identify the killer piece of sheet. Here, put some black amino. If anything, Berg used a digital camera to capture the print, which gave him the flexibility he needed to manipulate and clarify the image. Once he obtained the digital images of the bloody footprint, he followed a strict chain of evidentiary procedures. The images were tracked with a system that protected them from accidental manipulation or alteration.

The software we use uses the data encryption standard, which is a government standard that will actually allow you to mathematically prove that an image or any type of digital file has not been altered to preserve the original image made copies to work from now on I was ready to clean the print but the image was still in such poor condition that I wasn't sure I could do much The fingerprint ridges seemed hopelessly tangled with the fabric now at this point I would put the font in, you could start following a ridge line on the print and then all of a sudden the weaving pattern would appear and interrupt your view and you would go off on a tangent and you couldn't follow that. crest without being constantly interrupted by the cloth pattern, so the biggest problem was that cloth pattern.

We had to find a way to just delete it or get rid of it somehow and then look at the print, what was left after that and if I moved my box. here Berg used software to filter the background pattern, although he did not completely remove the weaving pattern, he managed to blur it allowing the crest detail to stand out in clearer relief, but seemed to burn it in as each step created the image of the la bloody print was a little clearer, it also created new problems for him to solve by blurring the pattern of the fabric, this process significantly reduced the contrast of the image, it remained to be seen if he could understand the print as eric berg struggled to generate a clear print .

Kirkland detectives continued to question the victim out of the trip. The neighbors left last night around nine. The names of five men who lived near the victim's condo complex emerged with prior arrests and fingerprint records. One of these men was Eric Hayden, who was living. In the apartment above the victims, when Hayden pulled into the condo parking lot, detectives were waiting to speak with him. I looked at the driver, who was a white man in his 20s, and noticed that he was smoking a cigarette and staring. He looked at us with his eyes, but his head still remained facing forward, that was a little suspicious.

Hayden walked past the officers without recognizing them and disappeared into his condo. We waited a few minutes and wanted to see if he would come back outside. He went back down the stairs and again passed by us without looking at us and was walking directly towards his car? It was at that moment that I walked up to him and said, sorry, are you Caden? He said yes, I am. I asked him yes. I was able to ask him a few questions about that night, to which he agreed. Hayden claimed that he had been drinking the night of the murder and that he knew nothing about it.

He hadn't noticed anything unusual when he got home. He took a drag on a cigarette as the conversation continued. They started at three o'clock sharp for the detectives. He seemed nervous when you walked up the stairs, but a case of nerves would never be enough for a conviction. Yes Hayden was the murderer. The police still needed solid evidence and the pressure was still strong on Eric Berg to provide it in his case. In the lab, he fed the image of the bloody palm print through another computer program, this step raising the tonal values ​​of the ridge detail much like adjusting the contrast on a television screen, finally using With all his software and experience, he produced a picture clear enough to compare to the prince of any suspect, the police asked Warwick to verify the prince of the five men with criminal records who lived near the condo complex and which included the eric hayden prince, we were given the name eric hayden and we went through our archive and we had some His impressions are on file at our agency, so we selected them for comparison.

Once you look at the comparison and make a positive opinion of a match, as a lead examiner, there is that short period of time where you are the only one. one who knows, the detectives don't know, no one knows, and that gives you a real sense of accomplishment. On May 31, Pat Warwick called detectives and told them that he had made a positive match. The prince on the sheet actually matched the prince. of eric hayden that same night kirkland detectives went to hayden's condo to execute a search warrant we have a warrant for you to rest lie face down today hayden was handcuffed and arrested hisApartment was searched from top to bottom and his girlfriend was questioned.

He was charged with first-degree murder. After Hayden's arrest, police began to piece together a picture of the gruesome events of May 12, 1995. They speculated that Eric Hayden had managed to entering the victim's home, probably under some false pretext, a brutal assault and murder soon followed. At some point, Hayden stood over his victim enjoying a cigarette, placed it on the nightstand and covered the victim with a sheep, then wiped his bloody hands on the sheet as he left the scene, one of the slippers of the victim got stuck in the door that held it. It had been the open door that first drew attention to the crime scene, although the suspect was in custody and the evidence strongly linked him to Detective Klopp's case it was not airtight Hayden's lawyers claimed that digital technology At trial, they argued that the enhanced images could have been altered or manipulated with any new forensic technology, hundreds of cases have been lost due to inadequate forensic procedures. evidence management.

The core of the defense team's argument was their view that a virtual image could falsely incriminate a very real and innocent man. If Hayden's attorneys had been successful in this challenge, losing those prints as evidenced would have seriously damaged the case. from the prosecution, but eric berg took special care to explain the process to the jurors and let them decide for themselves we took this to court we took the equipment we set it up we took the sheet we originally received from King County and we captured the image in court we took it to theThe computer did all the steps we had done and printed the image and we were able to show the jury that everything we did there is the same as what we did before and the result is the same and is repeatable, satisfied with the Berg's digital enhancement techniques.

They sounded credible, repeatable and damning, the jury only needed three hours to return their verdict of guilty of first-degree murder. This technology was amazing. It helped us solve the case much faster than we could have done by simply contacting people. or wait for additional information to come in this left no doubt in anyone's mind that this was the killer, positively identified the killer, those footprints that at first seemed like just specks had finally revealed their secrets to the new digital imaging technology and They finally betrayed them. Eric Hayden to Justice Hayden left his handprint thinking it was an illegible stain.

He didn't know that computer improvement could turn that slight residue into a clear image of guilt. Other criminals try harder to hide the traces of their crimes, but the remains of the murders are not so easy to hide. Forensics have ways of bringing them to light. On a frigid January morning in 1987, a fur trapper was checking his traps in the Cactus Flats region of California's Big Bear, hit by a blizzard. It was difficult to go in such miserable weather in Around 11 in the morning he noticed a large elongated object covered in a new blanket of snow.

There in the desert lay an abandoned mattress. The strange find seemed harmless enough, but when the trapper checked around he made a macabre discovery. He rushed to the nearest phone and we summoned police homicide sergeant gary stroup of the san bernardino county sheriff's department, we answered the call when we got there, it was starting to snow again and probably around 18 degrees, so we were trying to do the scene as fast as we could so we could get there. We got out of there before we were stranded under the mattress lay two bodies, a man and a woman, both murdered.

I know it's cold. Troop discovered that somehow the weather had worked in his favor, the cold having protected the bodies from decomposition. He was lucky too. to find the intact bodies check down there, see if there's anything, there's a lot of animal activity up there, there's bears, mountain lions, coyotes, you know, whatever, if the climate had been warmer, we probably would have had animal activity in the traces of the bodies, but who were the victims who had taken their own lives the only clues at the scene were the victims and the mattress the man had some distinctive tattoos that looked like those worn by convicts I see blood down there the detectives They tried to identify him by reviewing prison records.

Homicide Sergeant Stroup's hunch about the tattoos was that fingerprints taken from the man matched those of an ex-convict named Richard Christen. The woman was identified as his girlfriend Shanna, although yes, no autopsy evidence showed that both victims had died from multiple shotgun blasts through jail records that detectives could. to locate and question richard christensen's family kristen's brother told the police that richard and shanna had gone to victorville to see a man named archie woods richie and shannon yes officer barnes I called you according to the baptized brother was dealing drugs for woods who was a motorcycle gang member, this information along with a background check on Woods made him the detective's prime suspect.

The police visited Archie Woods. His home was in an isolated area 20 miles from where the victims were found. Woods was not at home. The detectives were. Greeted by Archie's girlfriend, Sherry Mills, she told the officer that she didn't know where he was, but she reluctantly agreed to let them in even before they entered Archie Woods' house. A possible clue caught her attention on the front porch next to the door. They found two places that appeared to be blood the stains could have been nothing or they could have been the clue that would blow the case wide open it was too early to tell the detectives they hoped to find the answer within the police investigating the deaths of richard christen and shanna think they chased the The only clue they had in the house of drug dealer Archie Woods they looked for any clue they could find.

At what time did Richard detectives inform Woods' girlfriend, Sherry Mills, that they were told that Shanna and Richard had visited the house? You had some friends at Mills, Kristen admitted. and had in fact been there, but only to spend the night on the way to another location, she had no idea of ​​her destination inside the house, detectives saw more brown stains that looked like blood, the house smelled of fresh paint in the bedroom From behind, they found several cans of paint. there was no sign of a mattress if the murders occurred in this room the police suspected that the paint covered crucial evidence the police needed a way to see underneath to look for evidence of a murder it was the only way they could connect the homicides to this potential scene The crime scene ordered a search warrant and then notified the crime scene unit that they had a difficult problem to solve in the yard.

The officers noticed several wide, low-profile tire tracks consistent with those of a sports car. The female victim, Shanna Thole was last seen driving her high-performance sports car, obvious blood stains were examined and visible evidence was collected, yet police were hampered if the blood found in the house matched the charcoal and the baptized was could be explained as coming from a fist fight, there was not enough blood in plain view to prove murder with a shotgun it seemed as if the entire investigation had literally hit a wall forensic expert david stockwell of the sheriff's scientific investigation division thought that an alternative light source could reveal evidence hidden behind the painting in the forest house.

The alternative light source or als is a laser beam of variable intensity that is usually used to highlight evidence of bodily fluids on clothing or on the body. crime scene Various fluids reflect specific light frequencies by adjusting the laser frequency. Invisible evidence can be seen. Forensic technicians use polarized glasses and reflection-enhancing chemicals to make traces of bodily fluids glow under the laser beam. Here the simulated bloody footprints become too faint to see with the naked eye, but with the right chemicals sprayed on them and with the als laser set to the right frequency, they are theoretically fluorescent at least in the blood evidence.

It could be made to glow even behind a layer of paint, but it would require a precise combination of chemicals, glasses tints, and laser frequencies to penetrate the painted layer. It is also very good for collecting certain biological fluids such as semen, but is not normally used. To find blood because blood itself is usually visible to the naked eye, what we were doing with the als was looking through that opaque layer of paint to see underneath and what was there, but would that work in such a little application? Orthodox at home? Archie Woods police in San Bernardino had never used an als this way before it was built to illuminate an entire wall.

They had to slowly comb small areas in the hope that the light would see through the paint and reveal any evidence underneath Ok Richard, little by little. Little did they succeed when the grim events at the forest house came to light. There, on the wall, beneath the fresh paint, was a wide pattern of dark blood splatters that had been almost invisible to the naked eye. This was the breakthrough. which police expected They could now read the stain patterns on the wall to determine what happened as shown here with this colored fluid. Violently spilled blood can behave in several ways.

It may drip forming a circular stain. Its diameter depends on how far and how much blood has traveled. When falling, it can form a series of streaks when thrown from a knife-like object that cuts through the air. This is called discarding, but another type of bloodstain, equally telling, appeared on Archie Woods' wall, the largest of all the bloodstains I have ever seen. At crime scenes they occur by what are called arterial jets and in this case what I was seeing under the paint on the wall was in fact the size of the blood stain consistent with the arterial jets the jet patterns on the wall were consistent with the location of the wounds found on Christen and although the als painted a grim picture of his violent death, the next problem was how to preserve the bloodstains to use as evidence in court without positive evidence of an arterial gush, an astute defense team could claim that only a fistfight had taken place. in that room not one murder and certainly not two murders the others had illuminated the evidence little by little but now the laser had to shine on the entire wall in order to take a photograph the investigators used a technique called painting with light while the shutter of the camera was open When left open, the als was displayed on the wall from left to right and top to bottom until the entire wall was recorded over the course of several minutes.

When the negatives were developed, they provided a clear and acceptable image of what the als revealed, which was good news. to sergeant stroup with a pattern that we had on that wall with the use of the laser, it was obvious that it was high speed and a lot more than you imagine you would ever have received from someone with a bloody nose or taking a beating the evidence of violent death in that fateful room was increasing exposed blood patterns revealed that at the time they were shot shannathol and richard christen were lying in bed posing no potential threat to their assailant while their alleged killer was still at large that is Yeah, that's what I'm saying, okay, in San Bernardino, the search for Archie Woods, suspected of killing Richard Christen and Shannathol, took on new urgency to avoid being implicated in the murders.

Wood's girlfriend cooperated with um, she left authorities a little later, um, she revealed to the detectives they said that Archie was in Modesto visiting his little girl on her birthday, so Richard and Shawn had already left on Friday. On the day Detective Stroup was gathering evidence at Archie's house, Archie himself was already arrested in a neighboring county for carrying a concealed weapon. gun in her car was driving a sports car at the time shanna thull sports car from her cell in san bernardino jail woods maintained her innocence in the double homicide claimed the murders were committed by members of her motorcycle gang according to woods on the night After the murder, gang members asked Woods to lure Richard Christen to their home.

Woods claimed that after Kristen and Thole arrived, he left his house when the gang told him that Woods refused to identify the gang members.involved. Archie stuck with his story that he did not know who the other people were who had entered the house, that they were alive when he left and dead when he returned, but he never revealed the names of the other individuals who were involved. Archie Woods said he then panicked and dumped the bodies in Big Bear. I came home and was scared, but with the help of the police he discovered the crucial piece of blood trails that punctured Archie's story.

The reclining position of the victims as indicated by the blood stains on the wall. It just didn't result in a violent confrontation. The detectives pieced together a likely scenario for that night's events. Kristen and Thole had gone to Archie's house to resolve a dispute over a drug deal gone bad. Apparently there was a long night of arguing and discussion. The disagreement was not resolved to Archie's satisfaction, but he left Kristen and Thole thinking an agreement had been reached. The couple went to bed unaware of the high price Archie planned to demand of them that night. Police believe that when Thought they were fast asleep, Woods beat his helpless victims to death with shot after shot from a wooden shotgun.

The only true claim was that he had dumped the bodies and blood-soaked bedding in Big Bear thinking no one would ever find them in his house. He had tried to do it for the first time. He cleaned the wall but the blood did not come out, then he covered the evidence with a thick layer of paint, but the alternative light source defied his efforts to hide his crime, it clearly showed the pattern of blood stains through the opaque layer, do you know when? Looking at that saying, I have no doubt that they were murdered here, they were in this bed and you know that will show everyone what we know or help us prove what we know or convince a jury of what we know and that's how it was Archie .

Woods received two life sentences for the double murders of Richard Christen and Shanna Thole. Every criminal leaves evidence behind. The key is knowing how to find it, but the most compelling evidence is also the least tangible. It is the knowledge that the criminal has of his actions. A new technique. is testing a way to access the suspect's mind to turn the criminal's own memory against him. Larry Farwell is the director and chief scientist of the Human Brain Research Laboratory in Fairfield, Iowa. He has developed a new computerized system known as brain fingerprinting that reads memory centers. of the human brain, he believes that brain fingerprinting will one day be used to positively link perpetrators to their crimes.

Brain fingerprinting is a scientific method of determining whether or not certain information is stored in the brain if an individual commits a crime. crime, you will have some information relevant to that crime stored in your brain, so we can use brain fingerprinting to scientifically determine whether you committed the crime or not, when someone commits a crime, your brain records it as a memory. Brain fingerprinting seeks to reveal that memory. When showing the suspect evidence taken from the crime scene, a sensor headband is placed on the subject. A series of images or words appear on the screen.

The computer records the brain waves produced in response to what the subject sees. The responses are recorded as a waveform by analyzing the wave pattern, Farwell can determine if the subject is recognizing what he is seeing, so when you have a situation where a crime has been committed, there are certain details about the crime. that only the criminal would know, then you can test if this brain has those details stored in it, if so, then the individual committed the crime, if then no, the FBI is at the forefront of developing and evaluating new technologies after hearing a farewell system, they put it to the test.

The FBI tested brain fingerprinting on its own agents at the bureau's training facility in Quantico Virginia. We conducted a study on FBI agents. and the purpose of this study was to see if we could determine whether an individual is an FBI agent or not based on their brain waves. If we can determine an FBI agent, then we could determine if someone is an agent of some foreign intelligence. organization or criminal group based simply on their brain responses, each subject was presented with a series of words on a computer screen, many were FBI acronyms or terms familiar only to the agents, the FBI agents were specifically told that They did everything they could to hide from Farwell that they were somehow connected to the office.

The participants' brain response to each stimulus was measured using electrodes on a headband. The electrodes were connected to the Farwell system's brain wave analysis software, so they did it. What we did was present stimulus phrases that only an FBI agent because from their training we would know that they were mixed with others. The FBI agents recognized them, we captured the brain responses, we knew they were FBI agents, the principle behind the fingerprint system of the brain is very simple, Farwell has discovered that the memory centers of the human brain respond to familiar stimuli with the distinctive change in electrical activity called a murmur, and that is the specific brain response that we measure and analyze with a computer. to determine whether an individual recognizes the words or images we show them. the screen that are relevant to the crime or whatever we are investigating when the subject sees something on the screen it creates a pattern of brain activity a murmur is an increase in brain activity that occurs when the subject recognizes what they are seeing this headband measured the electro brain test participants who did not work for the FBI did not recognize the FBI-specific stimuli, so no murmurs were detected, some of them relevant to the FBI and some of them not.

U.S. Navy researchers also heard the claims made about the system and devised a test of their own to see if brain fingerprinting could distinguish military medical students from civilians. They used a list of medicine-specific acronyms and military Lieutenant Commander Renée Hernández performed the test. The test was accurate at 100. They were able to tell. In each and every one of them, the trick with this is not so much whether the technique that it works with works correctly, the trick is whether you ask the right questions because if they hadn't come up with a bunch of really good acronyms that only the students would know, Then you wouldn't be able to tell the difference between medical students and staff for example, so the trick is to be smart enough to ask the right questions because the brain will always answer honestly.

Careful preparation of words or images is needed for a session. It is vital to obtain useful and accurate results. Questions should be phrased in such a way that when a murmur occurs it is clear why in a murder investigation both the

witness

to a shooting and the shooter may exhibit a murmur when confronted with the murder weapon. only one person actually committed the crime, there is another person who just saw it, he has the same information in his brain, so you have to understand it, you have to ask the questions correctly. Rigorously constructed laboratory tests are one thing, but how would the brain's fingerprinting system work? working on the front line of a murder investigation could dr farwell's computer read a real murderer's mind like a page torn from a sci-fi novel brain fingerprints could be the most powerful new forensic tool of the next century no Criminal secret would be safe if his own brain waves could bring him to justice.

Captain Blaine Carl, commander of the Alexandria, Virginia, police investigations division, also tested the system, although he was initially skeptical about its use in the real world, I quickly became convinced of the vision I had of the three puppets with a salad bowl sitting on top of someone's head with wires coming out of them and I thought that not only would this technique or this technology never be really useful, but that there is no way in the world that it would ever be accepted by the police community choral compared brain fingerprinting to the polygraph the lie detector used by authorities for many years the polygraph is still not admissible in court, but it has been become a standard tool to guide police the polygraph works on the theory that you can't monitor your heart rate or something called the galvanic response of your skin your breathing patterns brain fingerprints go a step further and recognize the Since you cannot control the electrical activity in your brain, a polygraph only records stress or emotional responses such as heart and breathing rate and sweating.

By analyzing the readings, the operator attempts to discern whether a subject is telling the truth or deceiving. their answers, but in some cases the polygraph can be fooled. Brain fingerprints are usually more general and can identify the presence of hidden information in people. fraudulently claiming knowledge or ignorance of certain facts, but again reveals only the presence of the information, not the details, so both will help us achieve the same end, which is ultimately to discover the truth about what we are investigating and formulate the best case or presentation in court, but they are going to attack it from different angles.

Both can be very crucial to a successful case. Serious doubts remain about the general application of Dr. Farwell's invention. Would a murmur be revealed if a murderer was in a drunken state or in a psychotic state when he took the life of his victim, in such cases there may not be a brain fingerprint after the fact, what would happen if right after commit the crime the murderer received a severe head trauma, but that is what really happened to him the person who was the bodyguard who was in the car with Princess Diana, everyone thinks he is trying to cover up something, he had such a traumatic injury serious that you will probably never remember it because the brain was never healthy enough to store that information for long. long-term memory In most cases fingerprinting the brain of a witness or accomplice can reveal knowledge of all types of crimes, from espionage to terrorist plots, at least that is the promise of this technology.

Brain fingerprinting is not yet admissible in the United States, but it could just be a question. The relatively new DNA profiling technique is known to be so accurate that genetic evidence is easily accepted, ultimately scientists and criminal investigators agree that brain fingerprinting shows great potential in murder investigations. In a shooting death without witnesses the killer would be the only person with intimate knowledge of the crime with Dr.'s computer. farwell the killer's own brain could become a prosecution witness technology is providing new ways to reveal evidence that would have been lost or unavailable just a few years ago investigators can look under the painting, pull out a palm print from a sheet and maybe even access a suspect's memory to find the truth.

There may be no way to stop crime completely, but forensic science is finding increasingly clever tactics to catch criminals.