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.
| Writing | Alan James | Screenplay |
| Crew | Duke Green | Stunts |
| Directing | Yakima Canutt | Director |
| Crew | Fred Graham | Stunts |
| Crew | Howard Lydecker | Special Effects |
| Crew | Tom Steele | Stunts |
| Writing | Basil Dickey | Screenplay |
| Crew | Theodore Lydecker | Special Effects |
| Editing | Harold Minter | Editor |
| Directing | Spencer Gordon Bennet | Director |
| Directing | Wallace Grissell | Director |
| Writing | Grant Nelson | Screenplay |
| Writing | Joseph F. Poland | Screenplay |
| Crew | Duke Taylor | Stunts |
| Writing | Jesse Duffy | Screenplay |
| Writing | Albert DeMond | Screenplay |
| Crew | Eddie Parker | Stunts |
| Crew | Dale Van Sickel | Stunts |
| Production | Ronald Davidson | Producer |
| Editing | Cliff Bell Sr. | Editor |
| Crew | Babe DeFreest | Stunts |
| Sound | Mort Glickman | Original Music Composer |
| Camera | Bud Thackery | Director of Photography |
| Production | R.G. Springsteen | Unit Manager |
| Art | Fred A. Ritter | Art Direction |
| Production | Ronald Davidson | Associate Producer |
| Art | Charles S. Thompson | Set Decoration |
| Sound | Ed Borschell | Sound |
| Sound | Richard Cherwin | Music Director |
