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.
| Writing | Robert Benchley | Screenplay |
| Writing | Stuart Palmer | Novel |
| Directing | Lloyd Corrigan | Director |
| Writing | Seton I. Miller | Screenplay |
| Camera | Nicholas Musuraca | Director of Photography |
| Costume & Make-Up | Mel Berns | Makeup Artist |
| Crew | Vernon L. Walker | Special Effects |
| Art | Perry Ferguson | Art Direction |
| Editing | William Morgan | Editor |
| Production | Kenneth Macgowan | Producer |
| Production | David Hempstead | Associate Producer |
| Sound | Alberto Colombo | Music Director |
| Sound | John L. Cass | Recording Supervision |
| Art | Van Nest Polglase | Art Direction |
