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The Monster That Challenged the World Details


The Monster That Challenged the World is the misleadingly title for one of the more well-regarded second-echelon horror films of the 1950s. An underwater earthquake in the Sargasso sea yields up the eggs of a long-extinct sea monster. Once hatched, the monster's offspring (which resemble huge snails) sustain themselves by sucking the life forces of various unlucky human land dwellers. Even worse, these horrendous creatures procreate at an incredible rate, laying 3000 eggs per sitting. Eventually, the monsters are neutralized by Modern Science, save for one stray snail that very nearly lunches on a little girl.. ~ Hal Erickson, Rovi


Tim Holt
as Lt. Cmdr. John Twillinger
Audrey Dalton
as Gail MacKenzie
Hans Conried
as Dr. Jess Rogers
Harlan Warde
as Lt. Bob Clemens
Casey Adams
as Tad Jones
Mimi Gibson
as Sandy MacKenzie
Gordon Jones
as Josh Peters
Marjorie Stapp
as Connie Blake
Barbara Darrow
as Jody Sims
Jody McCrea
as Seaman Fred Johnson
Charles Tannen
as Wyatt
Byron Kane
as Coroner
Gilbert Frye
as Deputy Scott
Milton Parsons
as Lewis Clark Dobbs
Ralph Moody
as Old Gatekeeper
Hal Taggart
as Mr. Davis


Arnold Laven
Pat Fielder
Heinz Roemheld
Composer (Music Score)
Heinz Roemheld
Musical Direction/Supervision
Augie Lohman
Special Effects