* The Book of Madness and Horror (1927)
* The Whisperer (1929)
* Horrorens helvede (1930)
* The Torture Squad (1932)
* Shadow of the Torture Man (1933)
* Doctor Skull's Murder Machine (1935)
* Monstermagerne (1936)
* Varulvemåne (1940)
* The Witching Moon (1941)
* The Corpse Eaters (1942)
* The Ghost Riders (1943)
* The Devil's Brew (1944)
* The Vampire's Claw (1945)
* Terrorens grav (1946)
* The Curse of the Mummy (1947)
* Den gale læges datter (1948)
* The House of Horror (1949)
* The Screaming Skull (1950)
* The Living Corpse (1951)
* Tingen fra sumpen (1952)
* The Giant Spider (1954)
* The Blob (1956)
* Horror of the Amazon (1958)
* Zombiernes dal (1961)
Noveller
* "Rædselen ved de røde tårne" (1926)
* "The Curse of the Mummy's Tomb" (1927)
* "Rædselshuset" (1928)
* "Ghoulens fest" (1929)
* "Vampyrerne i Venedig" (1930)
* "Varulvens Klo" (1931)
* "The Zombie Master" (1932)
* "Spøgelsesskibet" (1933)
* "The Devil's Brew" (1934)
* "Vampyrens kys" (1935)
* "The Curse of the Mummy's Hand" (1936)
* "Den gale læges datter" (1937)
* "Rædselshuset" (1938)
* "The Screaming Skull" (1939)
* "Det levende lig" (1940)
* "Tingen fra sumpen" (1941)
* "Den kæmpe edderkop" (1942)
* "The Blob" (1943)
* "Rædsel fra Amazonas" (1944)
* "Zombiernes dal" (1945)