The early morning phone call was disturbing enough. Two murders in the mercantile downtown and it looked like some freaky kind of serial killer. But Tesss day really turns on its head when she receives unexpected help from the F.B.I.—Fairyland Border Investigations. Her killers arent ordinary cultists or asylum escapees. Theyre worse, much worse. Insane redcap gnomes wont stop killing until the whole world is painted red in blood. Or until theyre stopped by an elf agent and a detective with a little too much Irish in her background.