People who have escaped the compound in California have said there is a prison on the grounds where they keep people who need "spiritual correction".
Last year there was that girl who escaped & said she was held as a captive slave for years working on one of their ships.
It's also been reported that Miscavige personally beats the hell out of people in his office. He doesn't even get henchmen to do it for him.
The FBI might be afraid of what they might encounter if they raided the place.
Scientology is a hard-core cult.
(I blame them for "Rock of Ages")