A break-in and sabotage attempt occurs at a top secret research institute and the culprit is cornered and captured. The problem is that he's been badly injured and claims to have lost his memory entirely. A cat-and-mouse game ensues between investigator Tuxan, the mystery intruder Welles and the people who sent him on the mission.
Unfortunately the movie The Groundstar Conspiracy is not yet available on HBO Max.
| Writing | Douglas Heyes | Screenplay |
| Production | Hal Roach, Jr. | Producer |
| Sound | Paul Hoffert | Original Music Composer |
| Directing | Lamont Johnson | Director |
| Writing | Leslie P. Davies | Novel |
| Production | Trevor Wallace | Producer |
| Editing | Edward M. Abroms | Editor |
| Camera | Michael Reed | Director of Photography |
| Camera | Ron Drinkwater | Focus Puller |
| Production | Earl A. Glick | Executive Producer |
| Editing | Bill Lewthwaite | Associate Editor |
| Crew | Herbert Ewing | Special Effects |
| Costume & Make-Up | Ilse Richter | Wardrobe Supervisor |
| Directing | Margaret Hanly | Script Supervisor |
| Production | Harvie McCracken | Unit Production Manager |
| Costume & Make-Up | Phyllis Newman | Makeup Artist |
| Sound | John W. Gusselle | Sound Mixer |
| Editing | Frederic L. Knudtson | Associate Editor |
| Production | Frank Arrigo | Associate Producer |
| Art | Cam Porteous | Set Designer |
| Directing | Roger Good | Assistant Director |
| Editing | Roy Piper | Associate Editor |
| Crew | Bob Herron | Stunts |
| Crew | David Ostere | Stunt Coordinator |
| Costume & Make-Up | Werner Keppler | Makeup Artist |
