Cults are making a comeback, according to some of the experts who study them. This two-part documentary is an inside look at these cults and consists of ex-believers' stories, and investigates what similarities they say exist between groups including the Exclusive Brethren, Scientology, Centrepoint, Gloriavale, Avatar, and the International Church of Christ.

Cults are making a comeback, according to some of the experts who study them. This two-part documentary is an inside look at these cults and consists of ex-believers' stories, and investigates what similarities they say exist between groups including the Exclusive Brethren, Scientology, Centrepoint, Gloriavale, Avatar, and the International Church of Christ.