Author, Original work · 29 titles
While the patient sleptBook· 1930Author
The patient in room 18Book· 1929Author
Mystery HouseFilm· 1938Original work
The White CockatooFilm· 1935Original work
While the Patient SleptFilm· 1935Original work
Enemy in the HouseBook· 1962Author
Wolf in Man's ClothingBook· 1942Author
The Hangman's WhipBook· 1940Author
Murder by an AristocratBook· 1932Author
The Murder of Dr. HarriganFilm· 1936Original work
The Great Hospital MysteryFilm· 1937Original work