- (1939) Novel: "It Is Not Safe to Know".
- (1925) Novel: "Confession Corner" (filmed as Confessions (1925)).
- (1930) Novel: "False Position".
- (1920) Novel: "Also Ran".
- (1917) Novel: "Castle to Let".
- (1929) Novel: "In the Balance".
- (1937) Novel: "Black Light".
- (1928) Novel: "Accessory After the Fact".
- (1932) Novel: "Beware of the Dog".
- (1928) Novel: "The Innocent Accomplice".
- Novel: "The Daughter Pays" (filmed as The Daughter Pays (1920)).
- (1929) Novel: "The Affair at the Chateau".
- (1927) Novel: "The Gift in the Gauntlet".
- (1931) Novel: "Brother Wolf".
- (1936) Novel: "The Trouble at Glaye"
- (1932) Novel: "The Missing Two".
- (1919) Novel: "The King's Widow".
- (1916) Novel: "Notorious Miss Lisle".
- (1935) Novel: "The Intrusive Tourist".
- (1910) Novel: "Out of the Night".
- (1930) Novel: "Stranglehole".
- (1933) Novel: "A Very Private Secretary".
- (1923) Novel: "The Lost Discovery".
- (1923) Novel: "The Man Who Won" (filmed as The Man Who Won (1923), The Man Who Won (1918)).
- (1931) Novel: "Whereabuts Unknown".
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