The Anubis Gates, by Tim Powers, had been out a good dozen years when I first read it in 1995 or so. Published in 1983 and winner of the Philip K. Dick award, this landmark steampunk novel is the story of Brendan Coyle, an English professor who finds himself trapped in a 19th century alternate London where ghosts lurk in the shadows, magicians vie for power over old gods and time travel gates, and guilds of penniless beggars and confidence tricksters scramble to pick up any crumbs dropped by the wealthier and more magically privileged classes of their intensely stratified society.
In The Anubis Gates, Coyle runs afoul of a magician, Amenophis Fipkee, more widely known as Dog-Face Joe. As a side-effect of a magical rituals gone wrong, Joe has become a grotesquely intimate form of serial killer. Every so often he must switch bodies, taking possession of a new victim. His new host immediately begins to grow a dense pelt of all-over body hair.