An amateur sleuth suspects foul play when a fellow passenger on a seaplane suddenly 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
Hildegarde Withers
James Gleason
Police Insp. Oscar Piper
Lola Lane
Phyllis La Font
George Meeker
Tom Kelsey, alias Roswell T. Forrest
Dorothy Libaire
Kay Deving
Harry Ellerbe
Marvin Deving
Chick Chandler
Dick French
Willie Best
Willie (as Sleep 'n' Eat)
