Yes. Malachi wrote “The Final Conclave” and a host of other books. My favorite is “Hostage to the Devil” published in 1976.
Anyone interested in the subject of possession should start with that book. M.Scott Pecks book “People of the Lie” should also be on the bookshelf.
Mine too for that matter. “Up From Down” Ted Adamson
Peck was an Episcopal Minister/Priest. His book makes a very clear case for evil in people, and he gives four excellent composite examples from a field of cases/clients he dealt with as a practicing Psychiatrist/Psychologist (I can’t remember which hewas).