DeMille played supporting roles in the Roy Rogers vehicle In Old Caliente (1939), the RKO adventure Isle of Destiny (1940), the Columbia mystery film Ellery Queen, Master Detective (1940), the Universal mystery film Dark Streets of Cairo (1940), and Paramount's Technicolor adventure Aloma of the South Seas (1941).
DeMille had minor roles in Roy Rogers' In Old Caliente (1939), RKO's Isle of Destiny (1940), Columbia's Ellery Queen, Master Detective (1940), Universal's Dark Streets of Cairo (1940), and Paramount's Technicolor Aloma of the South Seas (1941).