Investigation Discovery Saturday

The Barnetts' adoption of an allegedly six-year-old Ukrainian orphan turns into a nightmare when they learn she may not be six, or Ukrainian

Michael Barnett claims Natalia tried to poison them. But inconsistencies in his story leads investigators to question who the real villain is

The story of stockbroker Joe Pikul and his wife Diane who once lived the New York high life. However, when she discovered his secret life, their marriage crashed with a violent end

The fatal stabbing of Californian cheerleader Kirsten Costas in June 1984. Eventually one of her classmates was found to have carried out the crime

The murder of Cambridgeshire 10-year-olds Holly Wells and Jessica Chapman in 2002. Experts study media interviews of their killer, Ian Huntley, to expose his lies

The case of Tracie Andrews, whose road rage attack killed her lover. Plus, Mike Gifford-Hull's TV plea for his missing wife Farsi that hid the true facts of her disappearance