Elizabeth Rimplegar inhabits a household populated by virtual lunatics. Her mother, Nellie, mishandled the family fortune, and, alas, the stock market crash has depleted their worth. Elizabeth's goofy brothers cannot easily adjust to the life of the average worker. Meanwhile, the family doctor has his eye on Elizabeth, but he will have to compete with her suitor, an ill-informed writer.
Unfortunately the movie Three-Cornered Moon is not yet available on HBO Max.
| Directing | Elliott Nugent | Director |
| Camera | Leon Shamroy | Director of Photography |
| Production | B.P. Schulberg | Producer |
| Editing | Jane Loring | Editor |
| Sound | Earl S. Hayman | Sound Engineer |
| Costume & Make-Up | Travis Banton | Costume Designer |
| Sound | John Leipold | Original Music Composer |
| Camera | Milton Bridenbecker | Assistant Camera |
| Crew | Gordon Jennings | Special Effects |
| Crew | Mirra Rayo | Stand In |
| Camera | Fred Mayer | Camera Operator |
| Writing | Gertrude Tonkonogy | Theatre Play |
| Writing | Ray Harris | Screenplay |
| Writing | S.K. Lauren | Screenplay |
