Piers Morgan sits down with convicted serial killer Kimberly Saenz. In 2008, Saenz killed 5 of her patients at a Texas dialysis centre by injecting bleach into their bloodstream. Piers Morgan interviews eight of the most infamous murderers in the US, but can they convince him they’re innocent? Featuring some of the nation’s most fiercely contested cases, exclusive interviews, and sensational revelations...these convicted killers all have one thing in common; they insist they are innocent. In a close-quarters, one-hour interview, this is the murderer’s chance to give their side of the story. But when their time’s up will they have convinced Piers, they’ve been wrongfully convicted or will he see through their lies and know justice has been served?