A man who said he had survived the Grenfell fire, but that his wife and son were among its victims. After he claimed £12,500 and appeared on TV, police became suspicious.
The case of Jeremy Bamber who, in 1985, shot his parents, his sister and her twin sons. He protested his innocence in public until the weight of evidence led to his arrest.
The false allegations of Carl Beech, who claimed he had been sexually abused as a minor by a group of prominent men in the 1970s and '80s. The father of one was found guilty of 12 counts of perverting the course of justice.
Christopher Halliwell is known to have killed two young women. Experts analyse his police interviews to assess whether he is responsible for more unsolved disappearances.
The crimes of Neil Entwhistle, an English man convicted of murdering his American wife, Rachel, and their infant daughter in 2006. Experts analyse his behaviour.
Why was Aram Kurd the only person to survive an explosion at his supermarket that killed five people? Experts identify his deception in TV and police interviews.
Craig Savage claims he never intended to kill his estranged wife and her mother and that his gun had gone off by accident. His body language tells a different story.