(1949) Kill or Be Killed (1949) Murder with Mushrooms (1950) The Dark Circle (1951) Death in Diamonds (1951) Missing or Dead (1951) Death in a Hurry (1952) Sleepy Death (1953) The Long Search (1953) (U.S. title Drop Dead, 1954) Death in the Trees (1954) Double for Death (1954) The Kidnapped Child (1955) (a.p.a. The Snatch) Day of Fear (1956) Wait for Death (1957) Come Home to Death (1958) (U.S. title The Pack of Lies, 1959) Elope to Death (1959) Don't Let Him Kill (1960) (U.S. title The Man Who Laughed at Murder, 1960) The Crime Haters (1961) Rogues' Ransom (1962) Death from Below (1963) The Big Call (1964) A Promise of Diamonds (1964) A Taste of Treasure (1966) A Clutch of Coppers (1967) A Shadow of Death (1968) A Scream Of Murder (1969) A Nest of Traitors (1970) A Rabble of Rebels (1971) A Life for a Death (1972) A Herald of Doom (1973) A Blast of Trumpets (1974) A Plague of Demons (1975) Standalone novels (as "Gordon Ashe," 1940–1957) Who Was the Jester? (1940) The Man Who Stayed Alive (1955) No Need to Die (1956) You Bet Your Life (1957) Standalone novels (as "Abel Mann," 1966) Danger Woman (1966) Westerns (various pseudonyms) One-Shot Marriott and Roaring Guns were written under the pseudonym "Ken Ranger"; the rest were written under the pseudonyms "Tex Riley" (asterisked below) or "William K. Riley" (indicated below by # sign after date of publication). Gun-Smoke Range (1938) * One-Shot Marriott (1938) Two-Gun Girl (1938) * Roaring Guns (1939) Gunshot Mesa (1939) * Range War (1939) # Two Gun Texan (1939) # Gun Feud (1940) # Masked Riders (1940) * Rustler's Range (1940) * The Shootin' Sheriff (1940) * Stolen Range (1940) # Outlaw's Vengeance (1941) # War on the Lazy-K (1941) # Death Canyon (1941) * Guns on the Range (1942) * Guns over Blue Lake (1942) # Riders of Dry Gulch (1943) # Range Justice (1943) * Long John Rides the Range (1944) # Outlaw Hollow (1944) * Miracle Range (1945) # Hidden Range (1946) * The Secrets of the Range (1946) # Forgotten Range (1947) * Trigger Justice (1948) * Bullet Justice (1949) * Lynch Hollow (1949) * Outlaw Guns (1949) # Range Vengeance (1953) # Romance novels (various pseudonyms) Those indicated by "1" after the publication date were written under the pseudonym "Margaret Cooke"; those indicated by "2" after the publication date