• The Mystery of the Vanishing Treasure

    The Three Investigators solve a museum robbery and the appearance of gnomes that are bothering a children’s author. Children’s mystery book.

  • The Mystery of the Green Ghost

    The Three Investigators investigate a green ghost that seems to haunt an old house that holds a fascinating secret and a priceless treasure. Children’s mystery book.

  • The Case of the Phantom Frog

    The McGurk organization investigates a book who seems to be turning into a frog. Children’s mystery book.

  • The Case of the Invisible Dog

    McGurk’s annoying neighbor convinces him that he has invented something that turns his aunt’s dog invisible. Children’s mystery book.

  • The Case of the Tricky Trickster

    The local PTA is holding a variety show, but someone is trying to sabotage it. Bobbsey Twins children’s mystery book.