Tonight on the H2 network, the third season of America's Book of Secrets opens with what should be a controversial episode: The show has talked to dozens of former members and experts to reveal the secrets of Scientology. One of those experts was Raw Story executive editor and Scientology watchdog Tony Ortega, who told H2 that Scientology is in the grips of several different crises that has it on the brink.

Scientology grew out of the writings of scienc fiction writer L. Ron Hubbard, and reached its greatest extent, about 100,000 members, in the 1980s. But major defections by top officials and other problems have it in the news more than ever.

America's Book of Secrets takes a look at the hidden origins, strict doctrine, secret language and celebrity allure of the organization and how it dominates the lives of its followers.

Jenna Miscavige Hill, niece of Scientology's current leader, David Miscavige, describes her difficult experiences and escape from the organization.

Former Scientology executive, Mark Rathbun, demonstrates and explains Scientology's most revered spiritual technology: the 'E-Meter.'

Raw Story's Tony Ortega explains the draw and appeal of Scientology that allows them to recruit new members and keep their coffers full.

America's Book of Secrets airs tonight 10:00-11:00PM ET