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 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
CinemaSerf
There is something Marple-esque about Edna May Oliver's portrayal of the meticulous, no-nonsense, schoolteacher "Miss Withers". There's also something hideous about some of the fish in the aquarium where the police discover the corpse of the pretty universally disliked "Parker". It turns out that hi...