In preparation for his daughter's wedding, dentist Sheldon Kornpett meets Vince Ricardo, the groom's father. Vince, a manic fellow who claims to be a government agent, then proceeds to drag Sheldon into a series of chases and misadventures from New York to Central America.
Unfortunately the movie The In-Laws is not yet available on HBO Max.
| Writing | Andrew Bergman | Writer |
| Directing | Arthur Hiller | Director |
| Production | Arthur Hiller | Producer |
| Production | William Sackheim | Producer |
| Sound | John Morris | Music |
| Editing | Robert Swink | Editor |
| Art | Pato Guzman | Production Design |
| Camera | David M. Walsh | Director of Photography |
| Production | Alan Arkin | Executive Producer |
| Production | Dorothy Wilde | Associate Producer |
| Production | Dianne Crittenden | Casting |
| Art | Ernie Bishop | Set Decoration |
| Art | Robert De Vestel | Set Decoration |
| Costume & Make-Up | Del Armstrong | Makeup Artist |
| Costume & Make-Up | Mark Busson | Makeup Artist |
| Costume & Make-Up | Francine Haendiges | Hairstylist |
| Costume & Make-Up | Dione Taylor | Hairstylist |
| Production | David Silver | Unit Production Manager |
| Directing | Carole Keligian | Assistant Director Trainee |
| Directing | John T. Kretchmer | Second Assistant Director |
| Directing | Jack Roe | Assistant Director |
| Art | Sidney H. Greenwood | Property Master |
| Art | Michael J. Smith | Construction Coordinator |
| Art | Stan Cockerell | Assistant Property Master |
| Crew | Robert W. King | Carpenter |
| Art | Richard M. Kristy | Leadman |
| Sound | Clint Althouse | Boom Operator |
| Sound | Les Fresholtz | Sound Mixer |
| Sound | Larry Jost | Sound Mixer |
| Sound | Michael Minkler | Sound Mixer |
| Sound | Arthur Piantadosi | Sound Mixer |
| Sound | Ken Dufva | Foley Artist |
| Sound | Jerry Jacobson | ADR Editor |
| Sound | Julie Keye | Assistant Sound Editor |
| Crew | Milt Rice | Special Effects |
| Crew | Tony Parmelee | Special Effects |
| Crew | Kevin Pike | Special Effects Assistant |
| Production | Paul Pav | Location Manager |
| Editing | Dennis Wooley | Assistant Editor |
| Costume & Make-Up | Phyllis Garr | Costumer |
| Camera | Eric D. Andersen | Camera Operator |
| Camera | Jack Gereghty | Still Photographer |
| Lighting | Norman Harris | Gaffer |
| Camera | Ron Kenyon | Best Boy Grip |
| Camera | Richard Moran | Key Grip |
| Costume & Make-Up | John A. Anderson | Costume Supervisor |
| Sound | Sam F. Shaw | Sound Effects Editor |
| Crew | Chris Howell | Stunts |
| Crew | Rick Sawaya | Stunts |
| Crew | Bennie E. Dobbins | Stunts |
| Crew | John Moio | Stunts |
| Crew | Gray Johnson | Stunts |
| Crew | John Hudkins | Stunts |
| Crew | Chuck Waters | Stunts |
| Crew | Phil Chong | Stunts |
| Crew | Jerry Summers | Stunts |
| Crew | Hubie Kerns Jr. | Stunt Driver |
| Crew | Victor Paul | Stunts |
| Crew | Jesse Wayne | Stunt Driver |
