Marcia RalstonLeah Carlton Stanley BlystoneCapt. Olaf Nelson Edward KeaneElliott Carlton Jack Rube CliffordPug Anderson Morgan WallaceCapt. Lester Forrest TaylorFenwick the Inventor James BlaineDesk Sergeant Ed CassidyGuard at Hospital Dick CurtisMate on the 'Astoria' Larry GrenierIsland Guard Al HillSpeeding Motorist (archive footage) Jerry Jerome'Astoria' Officer Guy KingsfordSven - Whaler Crewman John MertonFirst Island Guard Jack Mulhall'Dolphin' Radioman Paul NewlanChris - Second Island Guard Eddie ParkerCoral Strand Crewman Jack PerrinIsland Guard-Launch Pilot House Peters Jr.Agent Burke Anthony RogersJim - Police Boat Pilot George SherwoodIsland Guard Mickey SimpsonAngry Motorist Tom SteeleCoral Strand Crewman / Whaler Crewman Frank WayneFenwick's Guard Duke YorkPete - Whaler Crewman Clarence Upson YoungScreenplay William A. SicknerDirector Of Photography 
