Newly-promoted if none too happily married Howard Brubaker leaves a rowdy company party early with the stunning Catherine, whom it turns out is herself unhappily married — to the boss. They spend an innocent night in New York becoming more and more attracted to each other, so that when Catherine announces she intends to leave her husband and return to Paris Howard asks to go along too.
Unfortunately the movie The April Fools is not yet available on HBO Max.
| Directing | Stuart Rosenberg | Director |
| Camera | Michel Hugo | Director of Photography |
| Production | Lynn Stalmaster | Casting |
| Production | Gordon Carroll | Producer |
| Writing | Hal Dresner | Writer |
| Art | Richard Sylbert | Production Design |
| Sound | Marvin Hamlisch | Music |
| Editing | Bob Wyman | Editor |
| Costume & Make-Up | Donfeld | Costume Design |
| Camera | Roger Shearman Jr. | Camera Operator |
| Directing | Ted Zachary | Assistant Director |
| Costume & Make-Up | Clay Lambert | Makeup Artist |
| Directing | Hank Moonjean | Assistant Director |
| Art | Robert Luthardt | Art Direction |
| Sound | Larry Jost | Sound |
| Directing | Betty Crosby | Script Supervisor |
| Crew | Victor Paul | Stunts |
| Art | William Kiernan | Set Decoration |
| Art | Craig Binkley | Set Dresser |
| Production | Carter DeHaven Jr. | Associate Producer |
| Directing | Charles Ziarko | Assistant Director Trainee |
| Costume & Make-Up | Agnes Flanagan | Hairstylist |
| Costume & Make-Up | Harry Ray | Makeup Artist |
