New York schoolmarm Hildegarde Withers assists a detective when a body of unscrupulous stockbroker Gerald Parker suddenly appears in the penguin tank at the aquarium.
Edna May Oliver
as Miss Hildegarde Martha Withers
Robert Armstrong
as Barry Costello
James Gleason
as Police Inspector Oscar Piper
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 / Dr. Max Bloom
William Le Maire
as MacDonald
Joe Hermano
as Chicago Lew
Guy Usher
as Parker