A woman leads an expedition into a remote jungle to find her long-lost brother, but instead finds a mad scientist who has created a fungus monster that feeds on the local inhabitants.
Unfortunately the movie The Unknown Terror is not yet available on Disney Plus.
| Production | Robert Stabler | Producer |
| Writing | Kenneth Higgins | Writer |
| Sound | Raoul Kraushaar | Original Music Composer |
| Camera | Joseph F. Biroc | Director of Photography |
| Directing | Charles Marquis Warren | Director |
| Crew | Jack Rabin | Special Effects |
| Crew | Louis DeWitt | Special Effects |
| Art | James W. Sullivan | Art Direction |
| Editing | Fred W. Berger | Supervising Film Editor |
| Costume & Make-Up | Glen Alden | Makeup Artist |
| Art | G. W. Bernsten | Set Decoration |
| Sound | Hugh McDonald | Sound |
| Directing | Nathan Barragar | Assistant Director |
| Production | Nathan Barragar | Production Manager |
| Costume & Make-Up | Robert O'Dell | Wardrobe Supervisor |
| Costume & Make-Up | Vou Lee Giokaris | Wardrobe Supervisor |
| Costume & Make-Up | Pat Whiffing | Hairstylist |
| Editing | Michael Luciano | Editor |
| Art | Mike Gordon | Property Master |
