I'll be heading to the book store tomorrow. Need some suggestions for books on cults (religious, satanists, true detective-esque)
the bible
necronomicon
Illuminatus Trilogy
Written by Malachi Martin. Martin was a guest on Art Bell's Coast to Coast on at least two occasions. He was an exorcist & wrote "Hostage to the Devil", a book often mentioned on /x/. The priest digging in the desert part of "The Exorcist" was based on him, though all the rest of "The Exorcist" is loosely based on a case he had nothing to do with. Martin left the priesthood, at an advanced age got a girlfriend, got a nice apartment in NYC, and then promptly fell down a flight of steps and died!
http://en.wikipedia.org/wiki/Malachi_Martin#Death
Even though you said you wanted a book to buy here's the whole book: http://www.fisheaters.com/HostageToTheDevilByMalachiMartin.pdf
>>17506072
Another book by Malachi Martin that covers all three of your interests stated in the OP. It deals with evil in the higher ranks of Catholicism. Martin says the American branch and Vatican itself are the most corrupt parts of the Catholic Church. He seemed to think The Church would break up into continent based units, but that was over a decade ago and doesn't seem anymore likely now than then. Still a good book.
http://en.wikipedia.org/wiki/Windswept_House:_A_Vatican_Novel
Ultimate Evil by Maury
Maury's argument was this. Wannabe Satanists have trouble financing their little cult fantasies, and at the same time Bad People often have need of disposable killers. A group of Drug Dealers he calls The Consortium back east realized they could pay wild-eyed Satanists money and they'd kill people for them. The cults got 'sacrifices' that made them feel all badass, and some cash. The Consortium that paid them got some contract killers that while they weren't real professional about how they did it were more than willing to off people. The results was a group of killers that would appear to the police to just be loons killing for weird reasons of their own. Most famous one SoS ( Son of Sam ). Murray says the publicized SoS murders were the tying up of loose ends after some other drug-money problem motivated murders.