A group of young drifters kidnap wealthy businessman Roc Delmonico just for kicks. They keep him captive, demanding a ransom for his safe release. However there is no one - wife, Mafia associates or mother - willing to part with the $200,000 ransom. Demonico is dismayed that no one appears unduly concerned about his fate and joins forces with the kidnappers to plot his revenge, blackmailing his once nearest and dearest into parting with $3,000,000 in hush money.
Unfortunately the movie The Happening is not yet available on HBO Max.
| Writing | James D. Buchanan | Story |
| Writing | Ronald Austin | Story |
| Writing | Ronald Austin | Screenplay |
| Writing | James D. Buchanan | Screenplay |
| Directing | Elliot Silverstein | Director |
| Writing | Frank Pierson | Screenplay |
| Production | Robert Manchel | Associate Producer |
| Sound | Howard Warren | Sound |
| Costume & Make-Up | Sherry Wilson | Hairstylist |
| Lighting | Al Reiners | Gaffer |
| Crew | Howard Winner | Second Unit Cinematographer |
| Production | David Wolfson | Associate Producer |
| Costume & Make-Up | George Fields | Makeup Artist |
| Sound | Art Dunham | Music Editor |
| Crew | Willis Cook | Special Effects |
| Production | Howard B. Jaffe | Associate Producer |
| Camera | Philip H. Lathrop | Director of Photography |
| Production | Sam Spiegel | Producer |
| Editing | Philip W. Anderson | Editor |
| Art | Jack Johnson | Props |
| Directing | Robert Altman | Second Unit Director |
| Art | Richard Day | Production Design |
| Directing | Ray Gosnell Jr. | Assistant Director |
| Costume & Make-Up | Gene Coffin | Costume Design |
| Costume & Make-Up | Irene Aparicio | Hairstylist |
| Directing | Tim Zinnemann | Assistant Director |
| Camera | James Latham | Grip |
| Art | Don K. Ivey | Set Decoration |
| Costume & Make-Up | Marlana May | Makeup Artist |
| Production | Russell Saunders | Production Manager |
| Editing | Oscar Denenberg | Assistant Editor |
| Art | Albert Brenner | Art Direction |
| Sound | Jack Haynes | Sound |
| Production | Jud Kinberg | Producer |
| Sound | Frank De Vol | Original Music Composer |
| Production | Jerry Porter | Location Manager |
| Directing | Charlsie Bryant | Script Supervisor |
| Costume & Make-Up | Jason S. Silverstein | Wardrobe Master |
