A Question of Proof (1935)
Thou Shell of Death (1936) = Shell of Death
There's Trouble Brewing (1937)
The Beast Must Die (1938) 
야수는 죽어야 한다
The Smiler with the Knife (1939)
Malice in Wonderland (1940) = The Summer Camp Mystery / The Malice with Murder
Minute for Murder (1947)
Head of a Traveler (1949)
The Dreadful Hollow (1953)
The Whisper in the Gloom (1954) = Catch and Kill
End of Chapter (1957)
The Widow's Cruise (1959)
The Worm of Death (1961)
The Sad Variety (1964)
The Morning After Death (1966)