Double Danger

Preston Foster

Robert Crane

Whitney Bourne

Carolyn Martin

Donald Meek

Gordon Ainsley, aka Henry Robinson

Samuel S. Hinds

Police Commissioner David Theron

Paul Guilfoyle

Taylor

Cecil Kellaway

Fentriss, aka Gilhooley

June Johnson

'Babs' Theron

Arthur Lake

Roy West

Edythe Elliott

Mrs. Edith Theron

Alec Craig

Bald Theron Servant

Harry Hayden

Dr. Hilliard

Cyril Thornton

Thornton - Theron's majordomo (uncredited)