The Monster That Challenged the World 1957

... Lt. Cmdr. John 'Twill' Twillinger

Audrey Dalton

... Gail MacKenzie

Mimi Gibson

... Sandy MacKenzie

Hans Conried

... Dr. Jess Rogers

Max Showalter

... Dr. Tad Johns

... Lt. Robert 'Clem' Clemens

... Sheriff Josh Peters

... George Blake (lab assistant)

... Connie Blake

... Lewis Clark Dobbs

... Sally

... Mrs. Simms

... Jody Simms

... Seaman Wyatt (Radioman)

... Seaman Fred Johnson

... Seaman Morty Beatty

... Monster Victim

... Deputy Larry

... Admiral Greenhouse

... Deputy Scotty

... Other Lock Watchman

... Boy with Morty's Cap

... Coroner Nate Brown

... Gatekeeper

... Patterson

Ralph Moody

... Watchman at Lock 57

... Seaman Howard Sanders

... Davis - Resort Owner

... Captain Masters

... Deputy Brewer

... Clarke

... Director

... Assistant Director

... Other

... Story

... Screenplay

... Producer

... Producer

... Casting

... Editor

... Director of Photography

... Underwater Director of Photography

... Other

... Original Music Composer

... Music Director

... Sound Recordist

... Sound Mixer

... Makeup Artist

... Hairstylist

... Wardrobe Supervisor

... Art Direction

... Set Decoration

... Special Effects

... Other

... Other

... Technical Supervisor