A writer for a greeting card company learns the true meaning of loneliness when he comes home to find his girlfriend in bed with another man.
| Writing | Bruce Jay Friedman | Novel |
| Directing | Arthur Hiller | Director |
| Writing | Neil Simon | Writer |
| Writing | Stan Daniels | Writer |
| Writing | Ed. Weinberger | Writer |
| Sound | Jerry Goldsmith | Original Music Composer |
| Camera | Victor J. Kemper | Director of Photography |
| Editing | Raja Gosnell | Editor |
| Editing | William Reynolds | Editor |
| Production | Toni Howard | Casting |
| Production | Lynn Stalmaster | Casting |
| Art | James Dowell Vance | Production Design |
| Art | Linda DeScenna | Set Decoration |
| Costume & Make-Up | Betsy Cox | Costume Design |
| Production | Arthur Hiller | Producer |
| Production | William E. McEuen | Executive Producer |
| Production | Judy Gordon | Associate Producer |
| Costume & Make-Up | Del Armstrong | Makeup Artist |
| Costume & Make-Up | Judith A. Cory | Hairstylist |
| Costume & Make-Up | Bron Roylance | Makeup Artist |
