The Penguin Pool Murder

Edna May Oliver

Hildegarde Withers

James Gleason

Police Insp. Oscar Piper

Robert Armstrong

Barry Costello

Mae Clarke

Gwen Parker

Donald Cook

Philip Seymour

Edgar Kennedy

Officer Donovan

Clarence Wilson

Bertrand B. Hemingway

James Donlan

Security Guard Fink

Gustav von Seyffertitz

Von Donnen

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William Le Maire

MacDonald

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Joe Hermano

Chicago Lew

Guy Usher

Parker

Rochelle Hudson

Telephone Operator

Wilfrid North

Judge

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A.S. Byron

Jailer Strauss (uncredited)

Edith Fellows

Little Girl at Aquarium (uncredited)

Chuck Hamilton

Jack, Policeman (uncredited)

Mary Mason

Parker's Secretary (uncredited)

Sidney Miller

Isadore Marks (uncredited)

Dorothy Vernon

Purse Snatching Victim at Aquarium (uncredited)