Lionel Twain invites the world's five greatest detectives to a 'dinner and murder'. Included are a blind butler, a deaf-mute maid, screams, spinning rooms, secret passages, false identities and more plot turns and twists than are decently allowed.
| Directing | Robert Moore | Director |
| Production | Ray Stark | Producer |
| Sound | Dave Grusin | Original Music Composer |
| Camera | David M. Walsh | Director of Photography |
| Editing | John F. Burnett | Editor |
| Production | Jennifer Shull | Casting |
| Writing | Neil Simon | Writer |
| Art | Marvin March | Set Decoration |
| Costume & Make-Up | Ann Roth | Costume Design |
| Costume & Make-Up | Joe DiBella | Makeup Artist |
| Costume & Make-Up | Vivienne Walker | Hairstylist |
| Directing | Fred T. Gallo | Assistant Director |
| Crew | Ron Frazier | Carpenter |
| Sound | Jerry Jost | Sound mixer |
| Sound | Joseph Kite | Boom Operator |
| Sound | Tex Rudloff | Sound Re-Recording Mixer |
| Sound | Frank E. Warner | Sound Effects Editor |
| Crew | Augie Lohman | Special Effects |
| Camera | Robert Edesa | First Assistant Camera |
| Crew | Maurice Marks | Stunts |
| Lighting | Norman Harris | Gaffer |
| Camera | Roger Shearman Jr. | Camera Operator |
| Camera | Mel Traxel | Still Photographer |
| Editing | Margaret Booth | Supervising Film Editor |
| Editing | Michael A. Stevenson | Assistant Editor |
| Crew | Charles Addams | Title Graphics |
| Art | Stephen B. Grimes | Production Design |
| Production | Roger M. Rothstein | Associate Producer |
| Directing | David Sosna | Second Assistant Director |
| Sound | George Probert | Music Editor |
| Crew | John Brice | Editorial Staff |
| Art | Harry Kemm | Art Direction |
| Costume & Make-Up | Charles H. Schram | Makeup Supervisor |
| Costume & Make-Up | Tony Faso | Costumer |
| Costume & Make-Up | Agnes G. Henry | Costumer |
| Production | Shari Leibowitz | Assistant Production Manager |
| Crew | George Rondo | Dialogue Coach |
| Camera | Richard Moran | Key Grip |
| Production | Vince Martinez | Finance |
| Costume & Make-Up | Mary Malin | Assistant Costume Designer |
| Crew | Carol Shapiro | Unit Publicist |
| Production | Frank Bueno | Producer's Assistant |
| Directing | Julia Tucker | Continuity |
| Art | Terry E. Lewis | Property Master |
| Art | Wayne Fitzgerald | Title Designer |
