John Duignan, a top scientologist who escaped Scientology has given the most explosive insight yet into the shady celebrity religion. For John, it cost him everything and everyone he held dear after he became a leading figure in the churchs British branch.

John says he was so brainwashed that he would have killed for Scientology. And he claims another member was driven to a suicide bid when she was rehabilitated after trying to leave. John tells of his nightmare in his book, "The Complex".

"He punched me in the face at least ten times and my glasses fell off, I was thrown up against a desk unit, a counter top, and that was the moment right then when I realized I could go no further down than this, to be beaten by the leader [David Miscavige] of my so-called church." - Marc Headley, ex-Scientologist and former Executive Producer at Golden Era Production (production company owned by Scientology), Glosslip April 27, 2008

Are you an insane Scientology idiot, by any chance?