A down-on-his luck businessman organizes an excursion to Sir Henry Morgan's Island for a treasure hunt only to encounter a mysterious phantom and murder.
Unfortunately the movie Horror Island is not yet available on HBO Max.
| Directing | George Waggner | Director |
| Writing | Alex Gottlieb | Story |
| Writing | Victor McLeod | Screenplay |
| Writing | Maurice Tombragel | Screenplay |
| Art | Ralph M. DeLacy | Art Direction |
| Sound | Bernard B. Brown | Sound Supervisor |
| Sound | Jess Moulin | Sound Mix Technician |
| Crew | Eddie Parker | Stunts |
| Crew | John Barton | Stunt Double |
| Crew | Dale Van Sickel | Stunts |
| Sound | Charles Henderson | Music |
| Sound | Charles Previn | Music |
| Sound | Frank Skinner | Music |
| Production | Jack Bernhard | Associate Producer |
| Production | Ben Pivar | Producer |
| Camera | Elwood Bredell | Director of Photography |
| Editing | Otto Ludwig | Editor |
| Art | Martin Obzina | Art Direction |
| Art | Jack Otterson | Art Direction |
| Art | Russell A. Gausman | Set Decoration |
| Costume & Make-Up | Vera West | Costume Design |
| Sound | Hans J. Salter | Music Director |
