Warlock Holmes: The Hell-Hound of the Baskervilles : Warlock Holmes 2 by G.S. Denning

The game's afoot once more as Holmes and Watson face off against Moriarty's gang, the Pinkertons, flesh-eating horses, a parliament of imps, boredom, Surrey, a disappointing butler demon, a succubus, a wicked lord, an overly-Canadian lord, a tricycle-fight to the death and the dreaded Pumpcrow. Oh, and a hell hound, one assumes.
Binding: Paperback / softback