As told to a psychiatrist: Mr. Peabody, middle-aged Bostonian on vacation with his wife in the Caribbean, hears mysterious, wordless singing on an uninhabited rock in the bay. Fishing in the vicinity, he catches...a mermaid. He takes her home and, though she has no spoken language, falls in love with her. Of course, his wife won't believe that thing in the bathtub is anything but a large fish. Predictable complications follow in rather tame fashion.
| Art | Boris Leven | Art Direction |
| Writing | Nunnally Johnson | Screenplay |
| Production | Nunnally Johnson | Producer |
| Art | Ruby R. Levitt | Set Decoration |
| Art | Russell A. Gausman | Set Decoration |
| Camera | Russell Metty | Director of Photography |
| Costume & Make-Up | Bud Westmore | Makeup Artist |
| Editing | Marjorie Fowler | Editor |
| Directing | Irving Pichel | Director |
| Art | Bernard Herzbrun | Art Direction |
| Costume & Make-Up | Grace Houston | Costume Design |
| Costume & Make-Up | Carmen Dirigo | Hairstylist |
| Sound | Robert Emmett Dolan | Original Music Composer |
| Writing | Guy Jones | Novel |
| Directing | Fred Frank | Assistant Director |
| Directing | Julia Marcia Davies | Script Supervisor |
| Camera | Maurice Goldberg | Still Photographer |
