The Great Jewel Robber

David Brian

Gerald Graham Dennis

Marjorie Reynolds

Martha Rollins

John Archer

Police Detective Lou Sampter

Jacqueline deWit

Mrs. Arthur Vinson

Perdita Chandler

Peggy Arthur

Stanley Church

Himself (mayor of New Rochelle)

Alix Talton

Brenda Hall (as Alice Talton)

Jessie Arnold

Undetermined Role (uncredited)