The Monster That Challenged the World 1957

Synopsis:

Giants Mollusks are released from the earth by an earthquake and start killing people.

Directed by: Arnold Laven
Written by: Pat Fielder
Runtime: 84 minutes
Critics score:
Tagline: A new kind of terror to numb the nerves!
Cast:
Tim Holt
Tim Holt
Lt. Cmdr. John 'Twill' Twillinger 
Audrey Dalton
Audrey Dalton
Gail MacKenzie 
Hans Conried
Hans Conried
Dr. Jess Rogers 
Barbara Darrow
Barbara Darrow
Jody Simms 
Max Showalter
Max Showalter
Dr. Tad Johns 
Harlan Warde
Harlan Warde
Lt. Robert 'Clem' Clemens