Upcoming episodes, programme details and where to watch over the next seven days. All times are UK time.
What exposed Tracie Andrews' lie that a road rage attack killed her lover? Mike Gifford-Hull's TV plea for his missing wife Farsi hides the truth. S2/Ep2
Bestselling author, Helen Bailey, was a wealthy widow. After finding love again with Ian Stewart she vanished. He helps in the search - but was it a cover-up? S2/Ep6
Shana Grice was murdered after being stalked by her ex-boyfriend, Michael Lane. He denied involvement, but experts examine police videos to determine the truth. S3/Ep6
In a rage, Ben Butler killed his young daughter, Ellie, but along with his wife faked a 999 call and protested innocence. Experts analyse their interviews. S3/Ep7
When 16-year-old Becky Watts vanished without trace suspicions fell on her step-brother and his partner. Experts analyse police interviews for clues. S3/Ep8
When April Barber was murdered at a remote beauty spot, her husband said he tried to stop the killer and even appealed for help on TV. Experts analyse his deception. S3/Ep9
When Laci Peterson went missing, her husband claimed he last saw her before he went fishing - but his secret mistress exposed his lies. Experts examine his behaviour. S3/Ep10