Patient in Room 18 (1929)
The Mystery of Hunting's End (1930)
While the Patient Slept (1930)
From This Dark Stairway (1931)
Murder by an Aristocrat (1932)
     aka Murder of My Patient
The Dark Garden (1933)
     aka Death in the Fog
The White Cockatoo (1933)
The House on the Roof (1935)
Fair Warning (1936)
Hand in Glove (1937)
The Pattern (1937)
Danger in the Dark (1937)
The Glass Slipper (1938)
Hasty Wedding (1938)
Chiffon Scarf (1939)
Brief Return (1939)
The Hangman's Whip (1940)
Speak No Evil (1941)
With This Ring (1941)
Fourth Mystery Book (1942)
Wolf in Man's Clothing (1942)
The Man Next Door (1943)
Unidentified Woman (1943)
Escape the Night (1944)
Wings of Fear (1945)
Five Passengers from Lisbon (1946)
The White Dress (1946)
Another Woman's House (1947)
House of Storm (1949)
Hunt With the Hounds (1950)
Never Look Back (1951)
Dead Men's Plans (1952)
The Unknown Quantity (1953)
Man Missing (1954)
Postmark Murder (1956)
Another Man's Murder (1957)
Melora (1959)
     aka Promise of Murder
Jury of One (1960)
The Cup, the Blade or the Gun (1961)
     aka The Crime at Honotassa
Enemy in the House (1962)
Run Scared (1963)
Call After Midnight (1964)
R.S.V.P. Murder (1965)
Witness at Large (1966)
Woman on the Roof (1967)
Message from Hong Kong (1969)
El Rancho Rio (1970)
Two Little Rich Girls (1971)
Murder in Waiting (1973)
Nine O'Clock Tide (1975)
Danger Money (1975)
Family Fortune (1976)
Bayou Road (1979)
Casa Madrone (1980)
Family Affair (1981)
Next of Kin (1982)
The Patient in Cabin C (1983)
Alpine Condo Crossfire (1984)
A Fighting Chance (1986)
Three Days for Emeralds (1988)

Patient in Room 18 / While the Patient Slept (1930)
Speak No Evil / with This Ring (1945)
Another Woman's House / Cheer for the Dead / Shadow for a Lady (1947) (with Eli Colter and J Lane Linklater)
Melora / Black Gold Murders / Prelude to Murder (1959) (with J B Ethan and A Gilbert)
Danger Money / Romanov Succession / Horn of Roland (1974) (with Brian Garfield and Ellis Peters)