Johnny must find the lost will of Mr. H. Bagwell Glomus, a man of great fortune and sinister witchcraft. mr. Glomus's widow is offering a reward to anyone who finds its hiding place, enough money to help Johnny's grandmother get the operation she needs.

Johnny Dixon and Professor Childermass are visiting a New Hampshire inn, and inside that inn is a clock. It s called the Childermass Clock. Inside the clock there is a tiny dollhouse room, an exact replica of the professor s childhood home. And on one of the shelves in that tiny room is a tiny skull. Inside that skull is something evil. In this third Johnny Dixon mystery, Johnny takes the skull to try to solve the murder of the professor s granduncle,...

A boy goes to live with his magician uncle in a mansion that has a clock hidden in the walls which is ticking off the minutes until doomsday.

Rose Rita Pottinger and Mrs. Zimmermann are transported back to 1828 to save the Weiss family from being destroyed by a wicked wizard.

Johnny Dixon, Fergie and Professor Childermass comply with a strange will left by the Professor's brother, which requires them to spend the summer at a desolate estate where they encounter a madman bent on destroying the world.

While spending the summer in an old house on a desolate Canadian island, Anthony Monday and Miss Eells discover a chest that can transport them to another world and a maniacal group who are plotting the destruction of people on Earth.

When thirteen-year-old Johnny Dixon and his friend Professor Childermass try to save the life of the elderly Dr. Coote, they find themselves facing the forces of a menacing voodoo cult.

Lewis Barnavelt and Rose Rita Pottinger are faced with a dilemma when their discovery of an unpublished opera score unleashes a wicked sorcerer who plans to rule the world by bringing back the dead.

After losing his parents, Lewis Barnavelt goes to live with his uncle Jonathan and discovers that not only is his uncle a warlock, but they must find a clock hidden in the house by an evil wizard that is counting down to the end of the world; a "ghost therapist" is hired to exorcise the ghosts in an old house so the owner can search for its fabled treasure, but the ghosts have other ideas.

Lewis Barnavelt tries to avert disaster when the destruction of an old bridge threatens to release a diabolical force, the legacy of a long-dead evil magician.