A schoolteacher and amateur sleuth suspects foul play when a fellow passenger on a seaplane gets sick and dies. The third and final film with Edna May Oliver and James Gleason as the astute schoolteacher Hildegarde Withers and the New York Police Inspector Oscar Piper busy solving crimes.
Edna May Oliver
James Gleason
Lola Lane
George Meeker
Dorothy Libaire
Harry Ellerbe
Chick Chandler
Willie Best
Leo G. Carroll
DeWitt Jennings
Spencer Charters
Arthur Hoyt
Matt McHugh
Morgan Wallace
Brooks Benedict
Irving Bacon