The Penguin Pool Murder

Edna May Oliver

as Hildegarde Withers

James Gleason

as Police Insp. Oscar Piper

Robert Armstrong

as Barry Costello

Mae Clarke

as Gwen Parker

Donald Cook

as Philip Seymour

Edgar Kennedy

as Officer Donovan

Clarence Wilson

as Bertrand B. Hemingway

James Donlan

as Security Guard Fink

Gustav von Seyffertitz

as Von Donnen

William Le Maire

as MacDonald

Joe Hermano

as Chicago Lew

Guy Usher

as Parker

Rochelle Hudson

as Telephone Operator

Wilfrid North

as Judge

A.S. Byron

as Jailer Strauss (uncredited)

Edith Fellows

as Little Girl at Aquarium (uncredited)

Chuck Hamilton

as Jack, Policeman (uncredited)

Mary Mason

as Parker's Secretary (uncredited)

Sidney Miller

as Isadore Marks (uncredited)

Dorothy Vernon

as Purse Snatching Victim at Aquarium (uncredited)