The Monster That Challenged the World (1957)

Tim HoltLt. Cmdr. John 'Twill' Twillinger Audrey DaltonGail MacKenzie Hans ConriedDr. Jess Rogers Barbara DarrowJody Simms Max ShowalterDr. Tad Johns Harlan WardeLt. Robert 'Clem' Clemens Gordon JonesSheriff Josh Peters Mimi GibsonSandy MacKenzie Marjorie StappConnie Blake Jody McCreaSeaman Fred Johnson Wallace EarlSally Dennis McCarthyGeorge Blake (lab assistant) Sarah SelbyMrs. Simms Milton ParsonsLewis Clark Dobbs Charles TannenSeaman Wyatt (Radioman) Robert BenevidesSeaman Morty Beatty John CarlyleMonster Victim John CloseDeputy Larry William ForrestAdmiral Greenhouse Gil FryeDeputy Scotty Joseph HamiltonOther Lock Watchman Charles HerbertBoy with Morty's Cap Byron KaneCoroner Nate Brown Ralph LittlefieldGatekeeper David McMahonPatterson Ralph MoodyWatchman at Lock 57 William SwanSeaman Howard Sanders Hal TaggartDavis - Resort Owner Mack WilliamsCaptain Masters Dan GachmanDeputy Brewer Michael DuganClarke

Abe HabermanMakeup Artist · Costume & Make-Up Allen SloaneWardrobe Supervisor · Costume & Make-Up Arthur GardnerProducer · Production Augie LohmanSpecial Effects · Crew B. F. RemmingtonSound Recordist · Sound Charles AlthouseSound Mixer · Sound Charles AlthouseSound Recordist · Sound Heinz RoemheldConductor · Sound James Dowell VanceArt Direction · Art Joel MossSound Recordist · Sound John FaureEditor · Editing Jules V. LevyProducer · Production Kerwin CoughlinCasting · Production Maurice VaccarinoAssistant Director · Directing Norman BishopTechnical Supervisor · Crew Olga CollingsHairstylist · Costume & Make-Up Paul EaglerOther · Camera Paul StaderOther · Directing Robert H. CrandallOther · Crew Rudy ButlerSet Decoration · Art Scotty WelbourneUnderwater Director of Photography · Camera Ted HaworthOther · Crew Virginia MazzucaProduction Assistant · Production