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.
| Directing | Elliot Silverstein | Director |
| Writing | Ronald Austin | Screenplay |
| Writing | Ronald Austin | Story |
| Writing | James D. Buchanan | Screenplay |
| Writing | James D. Buchanan | Story |
| Writing | Frank Pierson | Screenplay |
| Production | Howard B. Jaffe | Associate Producer |
| Production | Jud Kinberg | Producer |
| Production | Robert Manchel | Associate Producer |
| Production | Sam Spiegel | Producer |
| Production | David Wolfson | Associate Producer |
| Sound | Frank De Vol | Original Music Composer |
| Camera | Philip H. Lathrop | Director of Photography |
| Editing | Philip W. Anderson | Editor |
| Art | Richard Day | Production Design |
| Art | Albert Brenner | Art Direction |
| Art | Don K. Ivey | Set Decoration |
| Costume & Make-Up | Gene Coffin | Costume Design |
| Costume & Make-Up | Irene Aparicio | Hairstylist |
| Costume & Make-Up | George Fields | Makeup Artist |
| Costume & Make-Up | Sherry Wilson | Hairstylist |
| Costume & Make-Up | Marlana May | Makeup Artist |
| Production | Russell Saunders | Production Manager |
| Art | Jack Johnson | Props |
| Directing | Robert Altman | Second Unit Director |
| Directing | Tim Zinnemann | Assistant Director |
| Directing | Ray Gosnell Jr. | Assistant Director |
| Sound | Jack Haynes | Sound |
| Sound | Howard Warren | Sound |
| Crew | Willis Cook | Special Effects |
| Camera | James Latham | Grip |
| Lighting | Al Reiners | Gaffer |
| Crew | Howard Winner | Second Unit Cinematographer |
| Costume & Make-Up | Jason S. Silverstein | Wardrobe Master |
| Editing | Oscar Denenberg | Assistant Editor |
| Production | Jerry Porter | Location Manager |
| Sound | Art Dunham | Music Editor |
| Directing | Charlsie Bryant | Script Supervisor |
