Lon Chaney Jr. as Kharis

John Carradine as Yousef Bey

Robert Lowery as Tom Hervey

Ramsay Ames as Amina Mansouri

Barton MacLane as Inspector Walgreen

George Zucco as Andoheb, High Priest of Arkan

Frank Reicher as Prof. Matthew Norman

Harry Shannon as Sheriff Elwood

Emmett Vogan as Coroner

Lester Sharpe as Doctor Ayad

Claire Whitney as Ella Norman

Oscar O'Shea as Museum Watchman

Steve Barclay as Tom's Classmate (uncredited)

Jack C. Smith as Deputy Joe (uncredited)

David Bruce as Radio Announcer (uncredited; voice)

Noble 'Kid' Chissell as Townsman (uncredited)

Oliver Cross as Museum Tourist (uncredited)

William Desmond as Museum Tourist (uncredited)

Bess Flowers as Townswoman (uncredited)

Fay Holderness as Policewoman (uncredited)

Michael Jeffers as Townsman (uncredited)

Mira McKinney as Martha Evans (uncredited)

Jack Perrin as Townsman (uncredited)

Jack Rockwell as Deputy (uncredited)

Jack C. Smith as Deputy (uncredited)

Pietro Sosso as Priest (uncredited)

Ivan Triesault as Museum Guide (uncredited)

Dorothy Vaughan as Ada Blake (uncredited)

Carl Vernell as Student (uncredited)

Martha Vickers as Miss McLean - Student (uncredited)

Eddy Waller as Ben Evans (uncredited)

Anthony Warde as Detective at Museum (uncredited)

Caroline Frances Cooke as Townswoman (uncredited)