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.
as Hildegarde Withers
as Police Insp. Oscar Piper
as Phyllis La Font
as Tom Kelsey, alias Roswell T. Forrest
as Kay Deving
as Marvin Deving
as Dick French
as Willie (as Sleep 'n' Eat)
as Joseph B. Tate
as Captain Beegle
as Chief of Police Britt
as Dr. O'Rourke
as Madden
as McArthur aka Arthur Mack
as Roswell T. Forrest
as Hotel Gardener (uncredited)
as Man with Pelican (uncredited)
as Deputy (uncredited)
as Actress Holding Parrot (uncredited)
as Porter at Seaplane Landing (uncredited)
as Police Stenographer (uncredited)
as Hotel Clerk (uncredited)
as Night Watchman (uncredited)
