The Black Circle

Creighton Hale

Andrew MacTavish Ferguson

Virginia Valli

Lucy Baird

Jack Drumier

Daniel Baird

Walter Horton

Phillip Parker

Clarette Clare

Janet Ferguson

Edwin Denison

Al Garvin

John Davidson

Jim Garvin

Carl Sauerman

Jacob Ackerman

Eva Gordon

Eve Parker

Adolph Milar

Jeff Pollard

Frank Reicher

Réalisation

Raymond C. Hill

Histoire

Giles R. Warren

Scenario Writer

Max Schneider

Cinematography