The Penguin Pool Murder
Miss Hildegarde Martha Withers
Barry Costello
Police Inspector Oscar Piper
Gwen Parker
Philip Seymour
Officer Donovan
Bertrand B. Hemingway
Security Guard Fink
Von Donnen / Dr. Max Bloom
MacDonald
Chicago Lew
Parker
Telephone Operator
Judge
Student with Glasses Isadore Marks (uncredited)
Jailer Strauss (uncredited)
Little Girl at Aquarium (uncredited)
Jack, Policeman (uncredited)
Parker's Secretary (uncredited)
Purse Snatching Victim at Aquarium (uncredited)
