A horrified teen mutates into a crazed cannibalistic swamp creature, and must uncover the terrifying secret identity of his father before his nasty natural tendencies force him to make jambalaya out of the locals.
Unfortunately the movie The Beast Within is not yet available on HBO Max.
| Writing | Tom Holland | Writer |
| Directing | Philippe Mora | Director |
| Editing | Bert Lovitt | Editor |
| Editing | Robert Brown | Editor |
| Production | Gabriel Katzka | Producer |
| Sound | Les Baxter | Original Music Composer |
| Production | Harvey Bernhard | Producer |
| Crew | Jack L. Richards | Cinematography |
| Art | Leonard A. Mazzola | Set Decoration |
| Crew | Fred Cramer | Special Effects |
| Directing | Ron Fury | Assistant Director |
| Sound | Al Overton Sr. | Sound Mixer |
| Crew | Thomas R. Burman | Special Effects |
| Costume & Make-Up | Ann Wadlington | Hair Designer |
| Directing | Mark Lyon | Second Assistant Director |
| Crew | Sorin Serene Pricopie | Stunt Coordinator |
| Crew | Garry Elmendorf | Special Effects |
| Art | David M. Haber | Production Design |
| Costume & Make-Up | Tom Hoerber | Makeup Artist |
| Costume & Make-Up | Melanie Levitt | Makeup Artist |
