John Just Mallory, a down-on-his-luck private eye, is hired by an elf to find a missing unicorn in that Manhattan you can only see out of the corner of your eye, but which vanishes when you turn to face it. Mallory has one night to solve the crime and save his own life in almost-familiar world filled with goblins, leprechauns, elves, and the most powerful demon on the East Coast. This popular fantasy novel, first published in 1987, eventually spawned two more novels, six novelettes and a short story featuring John Justin Mallory...but this was the first, an urban fantasy years before there -were- urban fantasies.