The Monster That Challenged the World Widescreen

An earthquake in the Salton Sea unleashes a horde of prehistoric mollusk monsters. Discovering the creatures, a Naval officer and several scientists attempt to stop the monsters, but they escape into the canal system of the California's Imperial Valley and terrorize the populace. Starring: Tim Holt ... Lt. Cmdr. John 'Twill' Twillinger Audrey Dalton ... Gail MacKenzie Hans Conried ... Dr. Jess Rogers Harlan Warde ... Lt. Robert 'Clem' Clemens Max Showalter ... Dr. Tad Johns (as Casey Adams) Mimi Gibson ... Sandy MacKenzie Runtime:83 min Country:USA Language:English Year:1957