- Novel (as John Baxter): "A Foreign Affair"
- Novel (as Gordon Davis): "Where Murder Waits" (1965)
- Novel (as Gordon Davis): "Ring Around Rosy" (1964)
- Novel (as Gordon Davis): "Counterfeit Kill" (1963)
- Novel (as Gordon Davis): "House Dick" (1961)
- Novel (as Gordon Davis): "I Came to Kill" (1953)
- Novel (as David St. John): "Coven" (1972)
- Novel (as David St. John): "Diabolus" (1971)
- Novel (as David St. John): "Sorcerers" (1969)
- Novel (as David St. John): "Mongol Mask" (1968)
- Novel (as David St. John): "Hazardous Duty" (1966)
- Novel: "Body Count" (1992)
- Novel: "Murder in State" (1990)
- Novel: "Guadalajara" (1990)
- Novel: "Kremlin Conspiracy" (1985)
- Novel: "Cozumel" (1985)
- Novel: "Gaza Intercept" (1981)
- Novel: "Hargrave Deception" (1980)
- Novel: "Berlin Ending" (1973)
- Novel: "The Violent Ones" (1950)
- Novel: "Bimini Run"(1949)
- Novel: "Maelstrom" (1948)
- Novel: "Calculated Risk: A Play" (1948)
- Novel: "Stranger in Town" (1947) (he wrote this novel upon receiving a 1946 Guggenheim Fellowship for writing).
- Novel: "Limit of Darkness" (1944)
- Novel: "East of Farewell" (1943)
- Novel (as P. S. Donoghue): "Evil Time" (1992)
- Novel (as P. S. Donoghue): "Sarkov Confession" (1989)
- Novel (as P. S. Donoghue): "Dublin Affair" (1988)
- Novel (as Robert Dietrich): "Murder on the Rocks" (1957)
- Novel (as Robert Dietrich): "Be My Victim" (1956)
- Novel (as Robert Dietrich): "Cheat" (1954)
- Novel: "Sonora" (2000)
- Novel: "Guilty Knowledge" (1999)
- Novel: "Dragon Teeth" (1997)
- Novel: "Izmir" (1996)
- Novel: "Paris Edge" (1995)
- Novel: "Islamorada" (1995)
- Novel: "Ixtapa" (1994)
- Novel (as P. S. Donoghue): "Mazatlán" (1993)
- Novel: "Chinese Red" (1992)
- Nonfiction book (with Greg Aunapu): "American spy : my secret history in the CIA, Watergate, and Beyond" (foreword by William F. Buckley, Jr.)(2007)
- Nonfiction book: "Undercover: Memoirs of an American Secret Agent" (1974)
- Nonfiction book: "Give Us This Day: The Inside Story of the CIA and the Bay of Pigs Invasion - by One of Its Key Organizers" (1973)
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