WEEPING in front of cameras, Miles Evans appeared to be the perfect stepfather as he pleaded for news of missing nine-year-old Zoe.
But in that moment, he let slip two secret messages though his body language that revealed the chilling truth about what happened to his stepdaughter, The Sun reports.
While Evans tried to appear distressed, promising "lots of cuddles" for Zoe if she came home, police would later discover he was responsible for the girl's disappearance on January 11, 1997.
The man, who was 24 at the time, had murdered Zoe, stuffing her T-shirt into her mouth and dumping her body in a badger's den close to their home in Warminster, Wiltshire.
It wasn't until police found his T-shirt with Zoe's blood on it that he was arrested, with the court hearing he had possibly tried to abuse her sexually.
Evans, who was jailed for life, has never admitted to the murder.
In the documentary Faking It: Tears of a Crime, experts revealed how Evans had given himself away in the press appeal for information.
Body language expert Cliff Lansley said Evans had constantly contradicted his words with his actions.
He said: "He's making a claim, he wants her to come home, (saying) 'We really love you' - but those statements are being contradicted by an eye closure.
"You'll also notice from the upper arm, there's a movement of the upper arm. This suggests he's manipulating on his knee.
"And this is something we do to comfort ourselves when we're under stress. So, is he under stress, and he's manipulating his leg because of the TV cameras? Is he under stress because he's fearing being disbelieved when he's telling the truth? Or more likely, with the other signals, is he feeling stressed because he's trying to get away with a lie?"
Dawn Archer, a professor of Linguistics, agreed, saying: "In terms of what we see when he's delivering that message, it's very distant, very closed."
Zoe's mother Paula was comforted by Evans during the press conference, with the mother unable to continue the plea, overcome with emotion.
Evans was convicted but has continually maintained his innocence.
His request for parole was refused in 2010.
Evans is not the only criminal who gave himself away with a few tell-tale signs.
Fasi Nasri tried to fool police and the public after stabbing his wife Nisha, 29, to death, desperately pleading for answers.
Experts said the man, who was posing as a loving husband, let on how much of a kick he was getting from lying about the case.
Cliff Lansley said: "The confidence and arrogance of the guy who's orchestrated the killing to say someone has got a guilty conscience is bravado at its heights.
"Unfortunately he gives away this kick he's getting from fooling the media with a sly smile. Now this happens for about one fifth of a second."
He said the movement of the man's lips were known as "duping delight", saying: "It's the pleasure that he's probably feeling here of getting away with a lie or getting away with the fact that he was a murderer."
It emerged that Fasi Nasri had been having an affair, also taking out a joint £350,000 ($600,000) life insurance policy before his wife, who volunteered as a special police constable and ran a nail salon, was found dead on May 11, 2006.
This article was originally published by The Sun and appears here with permission.
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