Raymond Almond, the Often Nervous, and J. Huntley English, Monster Hunger, try to track down the wolflike beast haunting Lost Woods. Sequel to "The Case of the Horrible Swamp Monster" and "The Case of the Visiting Vampire.".
With her friends, Clark and Frog, Sarah investigates some mysterious happenings at an isolated farmhouse in the Pennsylvania woods where an eccentric toy inventor is working on a Frankenstein monster.