Looking for a general readership book not an academic one. Some topics I enjoy are cults, alchemy, magic, psychology, anthropology and religion. Here are some examples of books like this I've read and loved:
Brainwash: A Secret History of Mind Control by Dominic Streatfield
Kabbalah by Harry Freedman
Occult America by Mitch Horowitz
Bare Faced Messiah: The True Story of L Ron Hubbard by Russell Miller
by moss42069