* The Doctor's Secret
* The Secret Life of Daisy Bell
* The Bookseller's Daughter
* The Forgotten Pearl
* The Girl in the Painting
Short Stories:
* "Miss Marple's Last Case"
* "The Case of the Missing Will"
* "The Jewel Thief"
* "The Haunted House"
* "The Christmas Ghost"
Non-Fiction Books:
* The History of the Mystery Novel
* The Art of the Mystery Novel
* Writing Mystery Novels
* The Top 10 Mystery Novels of All Time
Children's Books:
* The Adventures of Sammy the Squirrel
* The Case of the Missing Pet
* The Ghost in the Attic
* The Mystery of the Magic Castle
* The Secret of the Hidden Treasure