- "The Green Door" (1946)
- "Leave It to Me" (1948)
- "The House on the Hill" (1950)
- "The Secret of the Lodge" (1952)
- "The Hidden Pool" (1954)
- "The Haunting of Hilary House" (1956)
- "The Dark Secret of Weatherend" (1958)
- "The Mystery of the Smuggler's Cove" (1960)
- "The Ghost in the Mirror" (1962)
- "The Curse of the Egyptian Mummy" (1964)
Μη μυθοπλασία:
- "How to Write a Mystery Story" (1951)
- "The Art of the Mystery Novel" (1956)
- "The Craft of Mystery Writing" (1961)
- "The Technique of Mystery Fiction" (1964)
- "The Art of Writing Fiction" (1968)