The case of Californian teacher Laci Peterson, who disappeared in December 2002 while eight months pregnant with her first child. Her husband Scott claimed he last saw her before he went fishing - but his secret mistress exposed his lies. Experts examine his behaviour.

The murder of 16-year-old Bristol student Becky Watts. When she vanished in February 2015, suspicion fell on her step-brother Nathan Matthews and his partner Shauna Hoare. Experts analyse police interviews for the clues that proved compelling.

Shana Grice was murdered after being stalked by her ex-boyfriend, Michael Lane. He denied involvement, but experts examined police videos to determine the truth.

Harold Shipman was a much-loved doctor. Millions watched the GP speaking on TV discussing the benefits of care, not knowing he'd already killed dozens of patients.

When arrested for historic sexual offences, TV weatherman Fred Talbot tried to hide the truth in police interviews. However, his repeated response of `no comment' spoke volumes.

Experts analyse a man's deception following the 2017 Manchester Arena terror attack. Police tapes expose the lies of a man who murdered his wife and hid her body in the freezer.

The case of Levi Bellfield, who denied his connection to a series of murders and rapes. However, videotaped police interviews told a different story.

A case from May 1997, when eight-year-old Jamie Lavis was on the Manchester bus Darren Vickers was driving just prior to his disappearance. Vickers joined the hunt and spoke on television - but was hiding an awful truth. Bones from Jamie's torso were eventually found hidden in bushes on a golf course five months later, and evidence led detectives back to the driver.