Fables of Tonight3 books in series
Stalking the Unicorn Publisher's Summary
Mallory soon finds that he might lose it all as he enters a Manhattan that just couldn't be. Dodging nasty gnomes and mischievous felines (not to mention rampaging elephants down Fifth Avenue), he discovers that the malevolent demon Grundy also seeks the fabled beast, and will stop at nothing.
Mallory is no Philip Marlowe, and will have to do some pretty fancy footwork just to stay alive. For if the Grundy wins, not only Mallory's life but his world will be forfeit.