Standalone Novels in chronological order
1939
The Mystery of the Centre-Forward (As:Patrick Gill)
View on Amazon1940
Who Was the Jester? / The Masked Gunman (As:Gordon Ashe)
View on Amazon1949
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Who Killed Rebecca? (As: Michael Halliday)
View on Amazon1949
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The Dying Witnesses (As: Michael Halliday)
View on Amazon1950
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Murder Week-End (As: Michael Halliday)
View on Amazon1951
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Quarrel with Murder (As:Michael Halliday)
View on Amazon1954
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Out of the Shadows (As: Michael Halliday)
View on Amazon1954
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Adrian and Jonathan (As: Richard Martin)
View on Amazon1954
The Charity Murders / The Charity Killers (As: Peter Manton)
View on Amazon1955
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The Man Who Stayed Alive (As:Gordon Ashe)
View on Amazon1955
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Cat and Mouse / Hilda, Take Heed (As: Michael Halliday)
View on Amazon1957
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Death of a Stranger / Come Here to Die (As: Michael Halliday)
View on Amazon1960
To Kill or to Die / To Kill or Die (As:Jeremy York)
View on Amazon1960
Go Ahead with Murder / Two for the Money (As: Michael Halliday)
View on Amazon1960
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How Many to Kill? / The Girl with the Leopard-Skin Bag (As: Michael Halliday)
View on Amazon1964
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Guilt of Innocence (As: Michael Halliday)
View on Amazon