Victor and Hillary are down on their luck to the point that they allow tourists to take guided tours of their castle. But Charles Delacro, a millionaire oil tycoon, visits, and takes a liking to more than the house. Soon, Hattie Durant gets involved and they have a good old fashioned love triangle.
Unfortunately the movie The Grass Is Greener is not yet available on HBO Max.
| Directing | Stanley Donen | Director |
| Writing | Hugh Williams | Screenplay |
| Writing | Margaret Vyner | Screenplay |
| Directing | Michael Stevenson | Third Assistant Director |
| Writing | Hugh Williams | Theatre Play |
| Writing | Margaret Vyner | Theatre Play |
| Production | Stanley Donen | Producer |
| Production | James H. Ware | Associate Producer |
| Production | Cary Grant | Executive Producer |
| Camera | Christopher Challis | Director of Photography |
| Editing | Jim Clark | Editor |
| Art | Paul Sheriff | Art Direction |
| Costume & Make-Up | Eric Allwright | Makeup Artist |
| Costume & Make-Up | John O'Gorman | Makeup Artist |
| Costume & Make-Up | Gordon Bond | Hairstylist |
| Art | Vernon Dixon | Set Dresser |
| Sound | Maurice Askew | Sound Recordist |
| Sound | John Cox | Sound Supervisor |
| Sound | John W. Mitchell | Sound Recordist |
| Costume & Make-Up | Hardy Amies | Costume Design |
| Costume & Make-Up | Christian Dior | Costume Design |
| Costume & Make-Up | John Wilson-Apperson | Wardrobe Supervisor |
| Production | Richard Goodwin | Unit Manager |
| Directing | Roy Stevens | Assistant Director |
| Camera | Austin Dempster | Camera Operator |
| Sound | Muir Mathieson | Conductor |
| Directing | Shirley Barnes | Continuity |
