Start with high-confidence cults & new religions books, then narrow by subgenre or adjacent topics.
Cave Mountain
Benjamin Hale
The Kingdom of the Occult
Walter Martin, Jill Martin Rische
Inside Scientology
Janet Reitman
When the World Didn't End
Guinevere Turner
Tears of the Silenced
Misty Griffin, Cassandra Campbell
Counting the Cost
Jill Duggar, Derick Dillard
