In the 1960s Charles Manson enticed women to live with him in a Californian desert commune. He ordered his followers to commit a string of gruesome murders.
In 1997, Heaven's Gate leader, Marshall Applewhite convinced 39 people to end their lives. Two survivors tell their experience of the largest mass suicide in the US.
In 2014 a severed limb draws attention to The Work, an apocalyptic cult led by 'Sinful Messiah', Julius Shacknow, who demanded terrible sacrifices from followers.
Sam Fife inspired a global network of nondenominational Christians. Survivors and victims recount the violent exorcisms, beatings and brainwashing they endured.
David Berg's Children of God cult attracted thousands of followers, including the late River Phoenix's family. But its message of free love became sinister.
Lost souls flock to the Word of Faith Fellowship, led by Pastor Jane Whaley. But deliverance comes at a price, including physical and psychological abuse.