They were two murder cases that mesmerised Washington, DC. A six-year old girl disappeared from her father's backyard in 1986. A 23-year-old female Harvard graduate vanished from her own bedroom in 1992. What did they have in common? Hadden Clark, a man with multiple personalities.

Learn how Clark outwitted the authorities for six years until some lucky breaks and inspired police work brought him to justice. Even as he serves a 70-year sentence, he remains a suspect in as many as a dozen unsolved cases.