At Greenglass House, a smuggler's inn, twelve-year-old Milo, the innkeepers' adopted son, plans to spend his winter holidays relaxing but soon guests are arriving with strange stories about the house sending Milo and Meddy, the cook's daughter, on an adventure.

Leo has explored the Whippet Hotel from top to bottom, discovering trains, flying goats, and mazes, and when he learns the secret beneath the hotel, a new adventure will begin.

"When Miss Lana accidentally buys a haunted inn at the Tupelo Landing town auction, Desperado Detectives--aka Mo LoBeau and her best friend Dale--opens up a paranormal division to solve the ghost's identity before the town's big 250th anniversary bash"--