Charlton Heston as Harry Steel

Robert Young as Stanley Moorehead

Nicole Maurey as Elena Antonescu

Thomas Mitchell as Ed Morgan

Glenda Farrell as Mrs. Winston

Michael Pate as Pachacutec

Leon Askin as Anton Marcu

William Henry as Phillip Lang

Kurt Katch as Man with rifle

Edward Colmans as Col. Emilio Cardoza

Yma Sumac as Kori-Tica

Alvy Moore as Young Man at Bar (uncredited)

Marion Ross as Miss Morris (uncredited)