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 |
| Writing | Hal Dresner | Writer |
| Production | Gordon Carroll | Producer |
| Sound | Marvin Hamlisch | Music |
| Camera | Michel Hugo | Director of Photography |
| Editing | Bob Wyman | Editor |
| Production | Lynn Stalmaster | Casting |
| Art | Richard Sylbert | Production Design |
| Costume & Make-Up | Donfeld | Costume Design |
| Camera | Roger Shearman Jr. | Camera Operator |
| Production | Carter DeHaven Jr. | Associate Producer |
| Art | Robert Luthardt | Art Direction |
| Art | William Kiernan | Set Decoration |
| Costume & Make-Up | Harry Ray | Makeup Artist |
| Costume & Make-Up | Agnes Flanagan | Hairstylist |
| Costume & Make-Up | Clay Lambert | Makeup Artist |
| Directing | Hank Moonjean | Assistant Director |
| Directing | Charles Ziarko | Assistant Director Trainee |
| Directing | Ted Zachary | Assistant Director |
| Art | Craig Binkley | Set Dresser |
| Sound | Larry Jost | Sound |
| Crew | Victor Paul | Stunts |
| Directing | Betty Crosby | Script Supervisor |
