New York's Odyssey Detective Agency is hired by two different clients to follow two women suspected of infidelity. Ladies' man John Russo trails Angela Niotes, the elegant wife of a wealthy Italian industrialist, while Charles Rutledge and Arthur Brodsky follow Dolores Martin, the beautiful young wife of a jealous husband. Their respective cases are complicated when John falls for Angela, and Charles falls for Dolores.
Unfortunately the movie They All Laughed is not yet available on HBO Max.
| Writing | Peter Bogdanovich | Writer |
| Directing | Peter Bogdanovich | Director |
| Writing | Blaine Novak | Writer |
| Editing | Scott Vickrey | Editor |
| Editing | William C. Carruth | Editor |
| Camera | Robby Müller | Director of Photography |
| Production | Blaine Novak | Producer |
| Production | George Morfogen | Producer |
| Production | Russell Schwartz | Associate Producer |
| Art | Kert Lundell | Art Direction |
| Art | Joe Bird | Set Decoration |
| Costume & Make-Up | Peggy Farrell | Costume Design |
| Costume & Make-Up | Verne Caruso | Hairstylist |
| Costume & Make-Up | Grazia De Rossi | Hairstylist |
| Costume & Make-Up | Nilo Jacoponi | Makeup Artist |
| Costume & Make-Up | Mickey Scott | Makeup Artist |
| Production | Martin Danzig | Unit Production Manager |
| Directing | Henry J. Bronchtein | Second Assistant Director |
| Directing | Robert V. Girolami | First Assistant Director |
| Directing | Candace Suerstedt | First Assistant Director |
| Directing | Stephen Wertimer | Assistant Director Trainee |
| Art | Jim Fredericks | Props |
| Art | Daniel Robert | Props |
| Crew | Parmelee Welles | Scenic Artist |
| Crew | Konrad Sheehan | Stunts |
| Sound | Michael Hilkene | Supervising Sound Editor |
| Sound | Mel Metcalfe | Sound Mixer |
| Sound | Gary Parker | Sound Recordist |
| Sound | Lionel Strutt | ADR Mixer |
| Sound | Richard Tyler | Sound Mixer |
| Sound | Ray West | Sound Mixer |
| Camera | Catharine Bushnell | Still Photographer |
| Camera | Allen Hansen | Grip |
| Camera | Douglas C. Hart | First Assistant Camera |
| Camera | Edward Lachman | Camera Operator |
| Lighting | Sal Martorano | Electrician |
| Camera | John Mazzola | Grip |
| Camera | Ron Mazzola | Grip |
| Camera | James McGrath | Key Grip |
| Camera | Patrick McGrath | Grip |
| Camera | David J. Schweitzer | Second Assistant Camera |
| Production | Riccardo Bertoni | Extras Casting |
| Costume & Make-Up | Mary Ellen Winston | Costume Coordinator |
| Costume & Make-Up | Bill Christians | Wardrobe Supervisor |
| Costume & Make-Up | Jean Frisbie | Wardrobe Supervisor |
| Editing | Robert Barrere | Assistant Editor |
| Editing | Catherine Peacock | Assistant Editor |
| Editing | Fred Rosenberg | Assistant Editor |
| Editing | Wendy Wank | Assistant Editor |
| Editing | Sonya Sones | Assistant Editor |
| Editing | Miriam Weeks | Assistant Editor |
| Production | Amy Sayres | Location Manager |
| Directing | Pat Depew | Script Supervisor |
| Crew | Tom O'Brien | Transportation Captain |
| Production | Elizabeth Gazzara | Production Assistant |