Four successful elderly gentlemen, members of the Chowder Society, share a gruesome, 50-year-old secret. When one of Edward Wanderley's twin sons dies in a bizarre accident, the group begins to see a pattern of frightening events developing.
| Directing | John Irvin | Director |
| Production | Burt Weissbourd | Producer |
| Editing | Tom Rolf | Editor |
| Writing | Lawrence D. Cohen | Screenplay |
| Writing | Peter Straub | Novel |
| Camera | Jack Cardiff | Director of Photography |
| Production | Douglas Green | Co-Producer |
| Production | Ronald G. Smith | Associate Producer |
| Production | Mike Fenton | Casting |
| Art | Norman Newberry | Production Design |
| Art | Norman Newberry | Art Direction |
| Sound | Philippe Sarde | Original Music Composer |
| Art | Mary Ann Biddle | Set Decoration |
| Costume & Make-Up | May Routh | Costume Design |
| Costume & Make-Up | Rick Baker | Special Effects Makeup Artist |
| Costume & Make-Up | Irving Buchman | Makeup Artist |
| Costume & Make-Up | Carl Fullerton | Special Effects Makeup Artist |
| Costume & Make-Up | Albert Jeyte | Makeup Artist |
| Costume & Make-Up | Robert Jiras | Makeup Artist |
| Costume & Make-Up | Philip Leto | Hairstylist |
| Costume & Make-Up | Rick Sharp | Makeup Artist |
| Production | Robert Latham Brown | Production Manager |
| Production | Ronald G. Smith | Production Manager |
| Directing | Dan Kolsrud | First Assistant Director |
| Directing | Dean Lyras | Second Assistant Director |
| Art | James Allen | Assistant Decorator |
| Art | William Apperson | Construction Foreman |
| Art | John Zemansky | Property Master |
| Sound | James R. Alexander | Sound |
| Sound | Allan Bromberg | Assistant Sound Editor |
| Sound | Charles L. Campbell | Supervising Sound Editor |
| Sound | Larry Carow | Sound Effects Editor |
| Sound | Samuel C. Crutcher | Sound Effects Editor |
| Sound | Richard C. Franklin | Sound Effects Editor |
| Sound | Robert L. Hoyt | Sound Recordist |
| Sound | David Pettijohn | Sound Effects Editor |
| Sound | Stanley H. Polinsky | Sound Re-Recording Mixer |
| Sound | Mark Server | Boom Operator |
| Sound | John J. Stephens | Sound Re-Recording Mixer |
| Sound | John Roesch | Foley Artist |
| Crew | Henry Millar Jr. | Special Effects |
| Visual Effects | Syd Dutton | Matte Painter |
| Visual Effects | Albert Whitlock | Visual Effects |
| Visual Effects | Susan Turner | Visual Effects |
| Camera | Lou Barlia | Camera Operator |
| Camera | Bobby Brown | Assistant Camera |
| Camera | Dick Mingalone | Camera Operator |
| Camera | Reggie Newkirk | First Assistant Camera |
| Lighting | Ted Varnadoe | Electrician |
| Editing | Michael Ripps | Assistant Editor |
| Sound | Harry Betts | Orchestrator |
| Sound | John Caper Jr. | Music Coordinator |
| Sound | John Caper Jr. | Conductor |
| Sound | Peter Knight | Conductor |
| Sound | Peter Knight | Orchestrator |
| Sound | Michel Mention | Orchestrator |
| Sound | Peter T. Myers | Orchestrator |
| Production | Patrick A. DiCocco | Production Driver |
| Directing | Sonny P. Filippini | Script Supervisor |
| Production | Mike Henry | Production Assistant |
| Art | Phill Norman | Title Designer |
| Production | Suzanne E. Petersen | Production Assistant |
| Costume & Make-Up | Dick Smith | Makeup Artist |
| Costume & Make-Up | Rick Baker | Makeup Artist |
