Blake of Scotland Yard

Ralph Byrd

Jerry Sheehan

Joan Barclay

Hope Mason

Lloyd Hughes

Doctor Marshall

Dickie Jones

Bobby Mason

Lucille Lund

Duchess

Nick Stuart

Julot

Sam Flint

Chief Insp. Henderson

Jimmy Aubrey

The Hag / Baron Polinka

Theodore Lorch

Daggett - the Butler (as Ted Lorch)

Bob Terry

Peyton - Henchman

Dick Curtis

Nicky

Gail Newbury

Mimi - Policewoman

George DeNormand

Pedro - Henchman

William Farrel

Count Basil Segaloff

Frank Wayne

Charles - the Footman