Claire is de dochter van de bekende uitvinder van de ‘Radiatomic Power Transmitter’, dr. William Forrest. Dr. Forrest is echter verdwenen tijdens een expeditie en Claire vraagt de criminoloog Lance Reardon om haar te helpen met de zoektocht naar haar vermiste vader. Beiden komen er achter, dat de krankzinnige wetenschapper Higgins zich kan transformeren in de duivelse kapitein Mephisto. Mephisto blijkt dr. Forrest ontvoerd te hebben en houdt hem voor losgeld op zijn onherbergzame ‘Mystery Island’ gevangen.
Nee, helaas is Manhunt of Mystery Island nog niet beschikbaar op Netflix in Nederland.
| Directing | Spencer Gordon Bennet | Director |
| Directing | Yakima Canutt | Director |
| Directing | Wallace Grissell | Director |
| Writing | Albert DeMond | Screenplay |
| Writing | Basil Dickey | Screenplay |
| Writing | Jesse Duffy | Screenplay |
| Writing | Alan James | Screenplay |
| Writing | Grant Nelson | Screenplay |
| Writing | Joseph F. Poland | Screenplay |
| Production | Ronald Davidson | Producer |
| Editing | Cliff Bell Sr. | Editor |
| Editing | Harold Minter | Editor |
| Crew | Howard Lydecker | Special Effects |
| Crew | Theodore Lydecker | Special Effects |
| Crew | Babe DeFreest | Stunts |
| Crew | Fred Graham | Stunts |
| Crew | Duke Green | Stunts |
| Crew | Eddie Parker | Stunts |
| Crew | Tom Steele | Stunts |
| Crew | Duke Taylor | Stunts |
| Crew | Dale Van Sickel | Stunts |
| Camera | Bud Thackery | Director of Photography |
| Sound | Mort Glickman | Original Music Composer |
| Production | Ronald Davidson | Associate Producer |
| Art | Charles S. Thompson | Set Decoration |
| Art | Fred A. Ritter | Art Direction |
| Production | R.G. Springsteen | Unit Manager |
| Sound | Ed Borschell | Sound |
| Sound | Richard Cherwin | Music Director |
