| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alvin Todd | Crew | Editing | Editor |
 Bud Geary | Crew | Crew | Stunts |
Bud Wolfe | Crew | Crew | Stunts |
Clarence Upson Young | Crew | Writing | Screenplay |
 Dale Van Sickel | Crew | Crew | Stunts |
 Eddie Parker | Crew | Crew | Stunts |
 Ford Beebe | Crew | Directing | Director |
Henry MacRae | Crew | Production | Producer |
John Rawlins | Crew | Directing | Director |
Joseph Gluck | Crew | Editing | Editor |
Louis Sackin | Crew | Editing | Editor |
Paul Huston | Crew | Writing | Screenplay |
 Tom Steele | Crew | Crew | Stunts |
William A. Sickner | Crew | Camera | Director of Photography |
 Duke York | Crew | Crew | Stunts |
Patrick Kelley | Crew | Editing | Editor |
 Al Hill | Cast | Actor | Speeding Motorist (archive footage) |
Anthony Rogers | Cast | Actor | Jim - Police Boat Pilot |
 Bernard Punsly | Cast | Actor | Butch |
 Billy Halop | Cast | Actor | Billy Adams |
 Dick Curtis | Cast | Actor | Mate on the 'Astoria' |
 Ed Cassidy | Cast | Actor | Guard at Hospital |
 Eddie Dunn | Cast | Actor | Whaler Captain |
Eddie Parker | Cast | Actor | Coral Strand Crewman |
 Edward Keane | Cast | Actor | Elliott Carlton |
 Ernie Adams | Cast | Actor | Zeke |
 Forrest Taylor | Cast | Actor | Fenwick the Inventor |
Frank Wayne | Cast | Actor | Fenwick's Guard |
 Gabriel Dell | Cast | Actor | Bilge |
George Sherwood | Cast | Actor | Island Guard |
Guy Kingsford | Cast | Actor | Sven - Whaler Crewman |
Hal E. Chester | Cast | Actor | Swab |
 Hans Schumm | Cast | Actor | Sub Captain |
 House Peters Jr. | Cast | Actor | Agent Burke |
 Huntz Hall | Cast | Actor | Toby Nelson |
 Jack Cheatham | Cast | Actor | Duke |
Jack Holmes | Cast | ||
 Jack Mulhall | Cast | Actor | 'Dolphin' Radioman |
 Jack Perrin | Cast | Actor | Island Guard-Launch Pilot |
 James Blaine | Cast | Actor | Desk Sergeant |
Jerry Jerome | Cast | 'Astoria' Officer | |
 Jerry Mandy | Cast | Actor | Tony - Grocer |
Joe Pope | Cast | ||
Joe Recht | Cast | Lug | |
 John McGuire | Cast | Actor | Tom Adams |
 John Merton | Cast | Actor | First Island Guard |
 Marcia Ralston | Cast | Actress | Leah Carlton |
 Mary Field | Cast | Actress | Aggie Nelson |
 Mickey Simpson | Cast | Actor | Angry Motorist |
 Morgan Wallace | Cast | Actor | Capt. Lester |
 Paul Newlan | Cast | Actor | Chris - Second Island Guard |
 Reed Hadley | Cast | Actor | Carl Tonjes |
 Richard Alexander | Cast | Actor | Jenkins |
 Richard Bond | Cast | Actor | Krans |
Robert R. Stephenson | Cast | Actor | |
 Stanley Blystone | Cast | Actor | Capt. Olaf Nelson |
Tom Steele | Cast | Actor | Coral Strand Crewman / Whaler Crewman |
 William Hall | Cast | Brack Warren | |
 Jack Rube Clifford | Cast | Actor | Pug Anderson |
Duke York | Cast | Actor | Pete - Whaler Crewman |
Larry Grenier | Cast | Island Guard | |
Bill Moss | Cast | ||
Bill Hunter | Cast | Policeman | |
| Person | Type | Job | Role(s) |
