Marc Headley, a former Scientology member of fifteen years, speaks in a conference in Hamburg, Germany, of his experiences while working at the headquarters of Scientology International, US.
Of course it's not slavery, they're just devoted to their religion, aren't they? And even if it's true, sure this is just an isolated thing, isn't it? No one would really do this in a modern civilised West, would they? Up to you to decide once listening to his story (+ introduction) in this YouTube playlist.