Rochelle Hudson
Telephone Operator
Robert Armstrong
Barry Costello
Gustav von Seyffertitz
Von Donnen / Dr. Max Bloom
Mae Clarke
Gwen Parker
Edgar Kennedy
Officer Donovan
James Gleason
Police Inspector Oscar Piper
Guy Usher
Parker
Chuck Hamilton
Jack, Policeman (uncredited)
Edna May Oliver
Miss Hildegarde Martha Withers
Clarence Wilson
Bertrand B. Hemingway
Donald Cook
Philip Seymour
Sidney Miller
Student with Glasses Isadore Marks (uncredited)
Edith Fellows
Little Girl at Aquarium (uncredited)
James Donlan
Security Guard Fink
Dorothy Vernon
Purse Snatching Victim at Aquarium (uncredited)
Mary Mason
Parker's Secretary (uncredited)
Wilfrid North
Judge