The Great Jewel Robber

David Brian

Gerald Graham Dennis

Marjorie Reynolds

Martha Rollins

John Archer

Police Detective Lou Sampter

Jacqueline deWit

Mrs. Arthur Vinson

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Perdita Chandler

Peggy Arthur

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Stanley Church

Himself (mayor of New Rochelle)

Alix Talton

Brenda Hall (as Alice Talton)

Jessie Arnold

Undetermined Role (uncredited)