In an alternate world 1948, Los Angeles is overrun by magicians, the jails are coping with werewolves and vampires, nightclub-owners hire zombie bouncers, and WWII-surplus gremlins are getting into automobiles.
Fred Ward is H. Philip Lovecraft, a hard-boiled private eye who refuses to do any of that necromantic stuff, and he is hired by effete sleaze David Warner to recover the Necronomicon, a book which will help black magicians rule the world.
An appealing cross-genre idea, refreshingly straightforward in its rewriting of history, this falls down slightly with its off-the-peg plot , but a lot of the details are spot-on, taking you into a fantasy world full of original refreshing ideas and some bizarre twists.