Fellows was hired by RKO Radio Pictures as a producer, with his first film being Bombardier, a topical but fictional account of the Doolittle Raid, starring Scott.
His next film was The Fallen Sparrow, a spy drama set in the aftermath of the Spanish Civil War.
[2] Other films Fellows produced for RKO were Tall in the Saddle and Back to Bataan starring John Wayne.
As a producer Fellows again worked with director Tay Garnett on Wild Harvest and A Connecticut Yankee in King Arthur's Court for Paramount Pictures.
[3] Eventually, Fellows became embroiled in a complicated divorce from his wife, necessitating the need to sell his half of the company.