Father Malachi Martin wrote about satan and demonism within the Catholic Church. An experienced exorcist and a professor of paleontolgy, Martin requested to be released from his vows as a Jesuit. His request was partially granted.
>>3089192 (PB)
Downloadable pdf of Malachi Martin's books:
1) Windswept House: a Vatican Novel
2) The Keys of this Blood
http://www.conspiracycentral101.com/uploads/3/9/1/0/39109265/windswept_house_-_malachi_martin.pdf
https://journals.ateneo.edu/ojs/index.php/landas/article/view/1280/1309