 | Thirteen-year-old Johnny Dixon is put in jeopardy when he and Professor Childermass try to find a robot made many years ago by an evil wizard. |
| Following clues in a mysterious deathbed letter, Rose Rita and a friendly witch, Mrs. Zimmerman, are lured into the sinister world of the occult. |
| Following clues in a mysterious deathbed letter, Rose Rita and a friendly witch, Mrs. Zimmerman, are lured into the sinister world of the occult. |
 | Johnny Dixon is plunged into a terrifying mystery-adventure when he removes a blue figurine called a ushabt. from church. |
| Library assistant Anthony and his friend Miss Eells travel to Canada to visit Miss Eells's brother, Emerson. While there, Anthony discovers a means of transporting himself and others into a parallel universe where the citizens are planning the... |
 | When Father Higgins disappears, Johnny Dixon and Professor Childermass discover disturbing clues which lead them to England and an encounter with a long-dead knight. |
| Thirteen-year-old Johnny Dixon is put in jeopardy when he and Professor Childermass try to find a robot made many years ago by an evil wizard. |
 | Lewis Barnavelt and Rose Rita Pottinger are faced with a dilemma when their discovery of an unpublished opera score unleashes a wicked sorcerer who plans to rule the world by bringing back the dead.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 stumbling upon a clue in the public library, Anthony searches for the treasure long rumored to have been hidden by a wealthy, eccentric citizen of their small town. |
 | Johnny Dixon worries that his adventures in the supernatural have put his father in grave danger. |
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