A would-be assassin, the world's greatest yodeller, and the resurgence of the sinister Unholy Order!Once again WILFRED WOOLFITT, famed supernaturalist, and NIMBLE, his plucky apprentice, must spring into action to solve the mystery of THE DEVIL'S KEY!But can their friendship survive its greatest test, or will the world be plunged into chaos as they try to prevent a demonic plot that threatens the fate of existence itself?
