story to try and confused. and a few hours later she will be charged with attempted murder in this case it was the cross-examination that led to the truth and then eased the way to a prosecution. among the police the interrogation process is considered a key element of the investigation where everything might fall into place which explains why in the united states this method of investigation has been pushed to its very limits more than anywhere else in the world how does the interrogation take place is it an exact science can you tell when the suspect is lying and can you trust the confessions. in the united states everything is aimed at making the suspect from the

architecture of the interrogation room it's a small room that disorientate suspects and allows for physical proximity. but does it work tiffany pawson son has definite views on this kind of police procedure. after a robust session in the interrogation room she confessed to killing her best friend on the fifteenth of april one thousand nine hundred ninety seven tiffany received a life sentence the memories of when she stepped into the interrogation room. into a dentist's office and he smelled the dentist smell and hear it and you just know it's going to be a very unpleasant situation it's kind of like walking into that except there's not going to be any. you walk in there and it smells. fear smells of the same way you

pick up that lingering energy of people in there before of the depression of the enzyte he of everything just like the atmosphere just clings to it and they said sure in there it's psychological. at the time tiffany was twenty three years old and a prostitute she's familiar with the police and their tactics but this time she's not being picked up for soliciting but for a murder in which all the clues seem to point to her to make a confess the police will use the oldest trick in the book the good cop bad cop routine i remember the one explicitly well. and he was tall approximately six two to six for dark complected overbearing he wore in jeans a lot polo shirts and had a very cocky attitude. the other one is

kind of blurry my memory of him is blurry i think he played the good cop bad was the bad cop. introducing sergeant almost seven feet tall in his socks years of experience and not the kind of cop that's easily fooled he makes new bones about his tough questioning methods it's his whole mark. there is a certain amount of. acting we're being. we're doing interviews and especially when you're in that realm as far as a good cop bad cop. so for the most part one is consoling caring you know almost. even putting off the other detective to the suspect saying you know he's he's a very mean guy he's a bad guy or whatever the case is trying to get closer with the suspect so

hopefully this is suspect confides and quote unquote good cop. to phonies tof him for three days how constant lying drives the interrogators to destruction. she makes up stories about her movements shifts the blame onto others and dismisses the evidence that the police don't give up. you get defensive and when you get defensive the detectives teams you jump on that why are you defensive then do you think only innocent people in a tourney you think an injury so if i say yes i need an attorney then you're saying oh you're guilty so you need an attorney is that what you're saying so it's very it's very difficult the last interview kind of switched where i was very direct i was very accusatory and i even stormed out of the room once again some theater if you will to try to create a better atmosphere for the other detective he was very tall and very over you all

the time overbearing and i can remember trying to like get in my chair you know like i'm sick of this my r.v. be this far away from my face and i go. and i just start saying anything else i could say. to me claims she acted in self-defense but it's an admission that. finds down. she never told the truth. know that would that is basically the sum of it she never told the truth and even then they and so i've never told the truth. tiffany played down her part in the murder the fact she doesn't break down under the questioning of an experienced policeman shows the limitations of the good cop bad cop method.

so a far less theatrical technique is being adopted that has found favor with many american police. it's an approach left handed doleman fervently supports in july two thousand and six a murder rocks the usually quiet town of dover in new hampshire laura perkins is shot dead by have a star the woman with whom she lives from the start had a study claims it was self-defense off the lure of stab her in the leg left on i'm told and is put in charge of the questioning. the court eather stone a lawyer perkins lived in that the downstairs apartment had or had two children laura had basically an adopted child from a previous relationship that sometimes stay with her there two on the night in question they'd been arguing since three four o'clock in the afternoon until two morning just constant arguing while constantly drinking everybody knew that had

their head shot laura the question was always going to be what are the circumstances was this a case of an abused woman protecting herself or was this a case of an angry woman killing a girl for. as a stone's interrogation begins at six in the morning just a few hours off to the murder left on a dome and takes have a stone into the room set aside for the purpose a cold stock room which meets police standards. so this is the interview room that we spoke to her stone that morning heather was seated here. our camera was behind this this window right here. today behind bars. with short hair and looking tired she's barely recognizable. admitting she had not acted in self-defense. remarkably video of the interrogation

was made available something that in most european countries would be unthinkable. has lied to the police about acting in self defense. the police patiently let's have a presenter her version of events. she was born to for a couple reasons one she really had an obligation to provide an explanation as to why her girlfriend is dead on the floor so she has a motivation to tell us something even if it's a lie she is mortician to talk to us she's vulnerable because she's tired she's

vulnerable because she's emotional can really is upset that this happened she's not a stone cold killer by any stretch. i don't really know what i was trying to do what i was lying. caught i mean part of me thought that. they'd believe me and part of me said no they won't the police believe there are certain facts that. they then turn to a proven tactic of gaining the trust of the suspect softening her up by taking advantage of one of the vices cigarettes. if. it's true or if it. is she. will.

get it. she was surprised she was surprised that we were going to her smoking because it's a no smoking building in a no smoking facility well whatever you know you're one of them welcome a small container if you're going to talk to us about this part of that just occurred i'm going to let you smoke in here they let a smoke in return for information. however tries to evade the questions something but intrigues the police. we. couldn't really explain where she was where heather was i wouldn't be where laura was during this whole violent struggle there so they were skeptical they're also skeptical because

the injuries she had were minor scratches to a leg not stab wounds or big slashes but just minor cuts to the way. heather claims laura made these wounds when she stabbed her. in fact it's a story suggested boy joyce a friend she called just after the shooting joyce also helps have a change the location of the crime to add weight to her assertion she acted in self defense. he put rings on him punched me in the face and then i cut my leg. we thought that would. get me so i wouldn't go to jail. americans also came up with another reason to reach a democracy people wanting to be liberated people wanting to be free reaches

also you know part of the message of their revolution no he said you more. than you know these to use. these same sources received ricin for this push you create the conditions you say some country has. one of mass destruction. in the case of the attack is a raid the will is that was that this was a big lie. on june sixteenth one thousand forty one we had a graduation party at school and the war broke out. the shops were always full of goods. but in september

leningrad was blocked. one day mom went and saw that all the shelves were empty. in november the. warehouses it was the main storage place for all the food in the city people eating the earth because it had small traces of sugar in it i tried to eat it as well but i couldn't. get the. incredibly heavy bombing. it was a direct hit on that very shelter and everyone was buried underneath. all of them with dead.

bodies technology innovation all the least of elements around russia. the future covered. the police heather to provide more details and she falls into the trap when she tries to act out the scene. oh sure. i'm not going to this. year. actually last. year. the police want to force heavy into providing the exact details something they know full well is a nightmare for those who are lying it's ok sure is that. it helps everyone. ok so now is how we will is to.

go. to mr c. . l. so emotional that i couldn't even really grasp their questions or even answer them i was trying to but i was lying at first so they knew this so they were trying to get it out of me and i was. the sole motional that. even their questions were like spanish to me. this is c.n.n. just saying. this is going to do it. steering to. see this is the bullet which is. the fact that she's tired probably made it easier for us because it was it's hard to keep up

a lie it's very easy to tell the truth over and over and over again the toes truth is the truth you just tell a story about what happened if it's the truth all you have to do is tell the truth over and over. if you tell why you have to work to tell lies you have to work to construct something that didn't happen. but after two hours of questioning the detectives know they're getting nowhere and move on to plan b. they put in the joyce is the friend who suggested the self-defense ploy has confessed to everything. detective watkins and says listen joyce has already talked to us we already know everything that george has told us well we didn't know that joyce i've talked to joyce she'd like to now while we're talking to heather we're reinterview injuries detective harrington who had been in here is now interview enjoys but we don't know what she said we're stuck in here with have so that's a bit of that's that's quite frankly a lot. exhausted and betrayed by her own lying have finally caves in

after three hours. later that year there. is there that. one of the things i kept saying to her is she would talk about her children and she was afraid her children she would never see her children again their children will grow up without a mother and my point to her was you know what's going to look better what's going to work out better for you if you come in here and lie to us about this the death of your girlfriend or you tell us the truth. i just think it this is it. i'm as we're just tell the truth.

is is there . now.

they went through a lot to get the truth. i went through a lot to tell them the truth i told them exactly. i told them. how i remembered it. but i wasn't in the right state of mind. so i don't even remember what i told them . other says he has no regrets about having finally admitted the truth she still has twenty four years of her sentence to serve. its every investigator's dream to get the suspect to confess after questioning the quest for the truth is a holy grail for every policeman and investigator. and since the one nine hundred thirty s. scientists have tried to create an infallible lie detector machine or polygraph.

it detects human reaction through captors placed on the arms the chest the fingers and. into the bus. remember. yes or no question. were you born in the month of may. did you steal that watch from the poster. no. any abnormal physical reaction can be interpreted as a sign of lining. up to find out more about polygraphs which were considered to be a form of truth serum for so many years we seek the opinion of dave brandt a florida based policeman who specializes in they use. one of the people who did research on polygraph was the guy who is better known for creating the comic

books wonder woman his name was marston he was a physician and he wrote comic books on the side and what's interesting if you know anything about wonder woman one of the tools that wonder woman had was called the lasso of truth where she would put a rope around the bad guy and that caused him to have to tell the truth while the lasso of truth that he uses is literally this the blood pressure cuff that we used today that goes around the subject's arm sort of a misnomer the instrument is a polygraph instrument it's recording physiological data it doesn't detect lies anymore than cardiogram detects heart attacks it's up to me to analyze the data that i record with a polygraph instrument to determine if a person is being truthful or deceptive as you see it rise to the line that's an increase in blood pressure ok so on this question here for example this was

a controlled question this is a lie the subject answered no which is why there's a minus sign there and you'll see there's a rise in blood pressure very subtle rise in blood. pressure but it's there it's clear to see when i put a line there there's a certainly an amplitude change here and also you'll see that his breathing changed from the normal respiration out here at this point he actually stopped breathing slightly during that question that's a control question that we know was a lie. dave bryant defends the tool he uses for his work adding the majority of police departments and even the cia use the polygraph in europe however it's banned because of it's on reliable results. steve risen is a law professor in chicago he's an expert in interrogation techniques and has been able to obtain the freedom of several suspects on death row life sentences often their alleged confessions he's one of the polygraphs fiercest critics. they hook

the person up to this machine they tell them that this machine is infallible and it's objective and it's neutral it doesn't know you this machine doesn't have the stake in whether or not you're innocent or guilty. and when they fail that polygraph test or better yet when they're told they fail that polygraph test it brings them down to a place of hopelessness where it's easier to get them to confess and we have numerous cases where police officers lie about polygraph results and get innocent people to confess. knowing the polygraph is not always dependable scientists have been urgently researching brain i and voice patterns instead so far without much success the human spirit seems capable of resisting even the most determined efforts to extract the truth. and to read

a private company based in chicago that has set up a method based largely on human psychology. today it's the largest company in the world dealing with interrogation techniques staffed by former detectives it has trained almost three hundred fifty thousand police officers. the company uses videos to show the one thousand and one ways to make a suspect talk. let me ask you did you force her to have sex with you no absolutely not did you take the money from the man. a man i told you i had nothing to do with the saying ok you tell me dr. not. read claims that offer it's training programs police officers will be able to spot lies in almost eighty five percent of cases it's a remarkable claim but despite its apparent success rate the company has turned down all requests to be interviewed it might be because of steve driza and other

experts who severely condemn its theories a simplistic and it's methods as overly coercive. all the studies show that people can deception at rates better than a coin flip may be slightly better than fifty percent ok. they're leaving these trainings thinking that they can detect deception it eighty five percent that's just hogwash but it drives the interrogation in a way that makes it much more likely that they're going to obtain false confessions . but reid has taken note of such criticism and has improved its methodology by asking instructors to be more prudent when it comes to the signals that could be interpreted as lying nevertheless the video still teach the same controversial process of recognizing lies through body language. a deceptive suspect may orient is body away from the interviewer in the front of the line position posture is the

rigid posture suspect the so preoccupied with this deception that he appears frozen in the chair and even unable to move the purpose of an interrogation unfortunately all too often is not about getting the truth it's about getting a confession so innocence is taken off the table and then over time the interrogator will give the suspect two choices one in which the crime that the suspect committed. portrays a suspect is a monster and another path the crime is accidental and over time after his denials are rejected over and over again the suspect will choose one of those two paths because one of those paths leads to leniency and the other one leads to greater punishment. it's

a choice that allows no room for the innocent and one that frank sterling to make more than twenty years ago. i used to. see. deer and just. enjoy. the nature. is actually what happened i don't. hold. back to those. two and a half years later when i got arrested for. twenty eight years old. and spent eighteen a half years in prison for a crime i did not do. live

live live. live live. live . meanwhile in vietnam talk out the former general director i can bank financial faces the death penalty for embezzling five hundred

thirty three billion dollars. that's about twenty five billion dollars chop shop for food on cox and how also this week a former u.s. fed official confessed to complaining or committing some horrific deadly money printing since many more dogs than five hundred thirty billion were embezzled from the american people according to andrew hoods are good men to a gruesome bond buying spree that had financially butchered main street america their bloated carcasses fed to the gluttonously out money changers and the rid of devils on wall street i'm sorry said the repent of quantitative easing or. what has that is absolutely unacceptable the fragility of the functional system appears to be absolutely true and i think if we will to never see that again we have to correct the who because if you tell good on you one scapegoat then you

know there will not correcting you have you do not get what you want we choose a much more slowly on what. margi dot com is launching a special project to mark the appalling scale of violence in iraq. we want you to know.

deadlines for the elimination of syrian chemical weapons said but finding a country to take and destroy the stockpiles proving far more challenging than expected. warning to whistleblowers a u.s. hacker getting ten years behind bars after breaking into a private companies spying database that revealed the white house was keeping an eye on human rights activists nationwide. japan who won't back down on a promise to return all evacuees to homes near fukushima despite alarming radiation levels of well outside the exclusion zone. is this close to the average level. in the chernobyl zone only with one exception the place where i'm at right now more than ten thousand people are currently living.