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Top Cast
Billy Halop
Billy Adams
Huntz Hall
Toby Nelson
Gabriel Dell
Bilge
Bernard Punsly
Butch
Hal E. Chester
Swab
Reed Hadley
Carl Tonjes
William Hall
Brack Warren
Mary Field
Aggie Nelson
John McGuire
Tom Adams
Marcia Ralston
Leah Carlton
Stanley Blystone
Capt. Olaf Nelson
Edward Keane
Elliott Carlton
Richard Alexander
Jenkins
Ernie Adams
Zeke
Jack Rube Clifford
Pug Anderson
Morgan Wallace
Capt. Lester
Eddie Dunn
Whaler Captain
Forrest Taylor
Fenwick the Inventor
Joe Recht
Lug
Richard Bond
Krans
James Blaine
Desk Sergeant
Ed Cassidy
Guard at Hospital
Jack Cheatham
Duke
Dick Curtis
Mate on the 'Astoria'
Larry Grenier
Island Guard
Al Hill
Speeding Motorist (archive footage)
Jerry Jerome
'Astoria' Officer
Guy Kingsford
Sven - Whaler Crewman
Jerry Mandy
Tony - Grocer
John Merton
First Island Guard
Jack Mulhall
'Dolphin' Radioman
Paul Newlan
Chris - Second Island Guard
Eddie Parker
Coral Strand Crewman
Jack Perrin
Island Guard-Launch Pilot
House Peters Jr.
Agent Burke
Anthony Rogers
Jim - Police Boat Pilot
Hans Schumm
Sub Captain
George Sherwood
Island Guard
Mickey Simpson
Angry Motorist
Tom Steele
Coral Strand Crewman / Whaler Crewman
Frank Wayne
Fenwick's Guard
Duke York
Pete - Whaler Crewman
Bill Hunter
Policeman
Bill Moss
Joe Pope
Jack Holmes