Broadcast September 28th 2010.   Part 1 of 4. Reporter John Sweeney’s last investigation into the Church of Scientology resulted in an explosive confrontation with church officials. This time, in a Panorama Special, one of those officials has turned whistleblower to help him reveal the dark secrets of the church, which boasts Hollywood A-listers Tom Cruise and John Travolta among its devotee More..s. Reporter: John Sweeney Producer: Katy Stead Producer: Sarah Mole Executive Producer: Darren Kemp