Twee echtgenoten die hun vrouwen wantrouwen, huren de diensten van een recherchebureau in New York in om hen te volgen. Rechercheur John Russo (Ben Gazzara), een rokkenjager, moet Angela Niotes (Audrey Hepburn), de mooie en elegante vrouw van een rijke koopman, in de gaten houden. Charles (John Ritter) en Arthur (Blaine Novak) van hun kant zullen in de voetsporen treden van Dolores Martin (Dorothy Stratten). De zaken worden ingewikkeld wanneer John verliefd wordt op Angela en Charles de Dolores.
Nee, helaas is They All Laughed nog niet beschikbaar op Netflix in Nederland.
| Writing | Peter Bogdanovich | Writer |
| Directing | Peter Bogdanovich | Director |
| Writing | Blaine Novak | Writer |
| 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 |
| Editing | Scott Vickrey | Editor |
| Editing | William C. Carruth | Editor |
| Camera | Robby Müller | Director of Photography |
