- (1928) Novel: "The Phantom in the House" (filmed as The Phantom in the House (1929))
- (1922) Novel: "Hornet's Nest" (filmed as Hornet's Nest (1923))
- (1920) Novel: "Back from the Dead" (filmed as Back to Life (1925))
- (1931) Novel: "The Devil's Triangle" (filmed as Almost Married (1932)).
- (1929) Novel: "Silent Thunder" (filmed as The Man Called Back (1932)).
- (1929) Novel: "In the Blood" (filmed as In the Blood (1923)).
- Novel: "On Principle" (filmed as Love's Redemption (1921)).
- Novel: "A Beggar in Purple" (filmed as A Beggar in Purple (1920)).
- (1917) Novel: "Other Men's Shoes" (filmed as Other Men's Shoes (1920)).
- Novel: "Snow in the Desert" (filmed as Snow in the Desert (1919)).
- Novel: "The Green Orchard" (filmed as His Parisian Wife (1919), The Green Orchard (1916)).
- Novel: "The Straight Game" (filmed as The Great Game (1918)).
- (1927) Novel: "Back to Eden".
- (1923) Novel: "Battling Barker".
- (1938) Novel: "The Black Spot Mystery".
- (1939) Novel: "Chain Murder".
- (1928) Novel: "Consider Your Verdict".
- (1926) Novel: "Delilah of Mayfair".
- (1935) Novel: "Eight Three Five".
- (1936) Novel: "Facing East".
- (1934) Novel: "The Great Conspiracy".
- (1933) Novel: "Hagar, Called Hannah".
- (1933) Novel: "The Hanging Sword".
- (1929) Novel: "The House of Corbeen".
- (1936) Novel: "Justice Is Done".
- (1933) Novel: "Kharduni".
- (1928) Novel: "The Leopard's Spots".
- (1926) Novel: "The Master Key".
- (1936) Novel: "Motive for the Crime".
- Novel: "The Museum Mystery".
- (1924) Novel: "Neither Do I Condemn Thee".
- (1934) Novel: "Night of Horror".
- (1930) Novel: "Not Mentioned".
- (1928) Novel: "Pagans".
- (1936) Novel: "The Perverted Village".
- (1941) Novel: "Public Ghost Number 1".
- (1927) Novel: "Pursuit".
- (1935) Novel: "Robert Harlow's Wife".
- (1939) Novel: "Salome Had a Sister".
- (1932) Novel: "Secret Ways".
- (1930) Novel: "Silence".
- (1938) Novel: "Silent Accuser".
- (1936) Novel: "Sinister River".
- (1931) Novel: "Some Fell Among Thorns".
- (1937) Novel: "The Stars I'd Give".
- (1940) Novel: "The Story of Peter Trussock".
- (1931) Novel: "Strange Bedfellows".
- (1940) Novel: "The Strange Case of Sir Merton Quest".
- (1939) Novel: "A Stranger Came to Dinner".
- (1941) Novel: "Study in Suspense".
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