About scientology, it's easy to get hold of books describing the basics. But you have to pay more and more for "higher" "scriptures" so basically no one has access to them. In my country some guy actually file shared I think two of those "higher" books, one of them my friend downloaded. It was not an easy read, but it did indeed mention what we normally would refer to as aliens and alien possession. For us it was just a funny joke before the stalking started.

Unfortunately this is not my first encounter with them, when I was a teen they had the area's biggest rehab clinic. My school sent kids there for work practice and also the scientologists were invited every year to lecture about drugs and try to get us interested in their "religion".