นักแสดง
Huntz Hall
Toby Nelson
Bernard Punsly
Butch
Jack Cheatham
Duke
Jack Mulhall
'Dolphin' Radioman
House Peters Jr.
Agent Burke
Ed Cassidy
Guard at Hospital
William Hall
Brack Warren
John McGuire
Tom Adams
Richard Alexander
Jenkins
Eddie Parker
Coral Strand Crewman
Hans Schumm
Sub Captain
Billy Halop
Billy Adams
Marcia Ralston
Leah Carlton
Richard Bond
Krans
Dick Curtis
Mate on the 'Astoria'
Paul Newlan
Chris - Second Island Guard
Jack Perrin
Island Guard-Launch Pilot
Jerry Mandy
Tony - Grocer
John Merton
First Island Guard
Jack Rube Clifford
Pug Anderson
Forrest Taylor
Fenwick the Inventor
Al Hill
Speeding Motorist (archive footage)
Mickey Simpson
Angry Motorist
Reed Hadley
Carl Tonjes
Edward Keane
Elliott Carlton
Ernie Adams
Zeke
James Blaine
Desk Sergeant
Gabriel Dell
Bilge
Morgan Wallace
Capt. Lester
Eddie Dunn
Whaler Captain
Duke York
Pete - Whaler Crewman
Stanley Blystone
Capt. Olaf Nelson