Lieutenant John Twillinger (Tim Holt, The Magnificent Ambersons) thinks he's seen it all - until an earthquake under the Salton Sea unearths a horrifying nest of prehistoric killer crustaceans. Giant, terrifying and with a hunger for human flesh, the beasts begin feeding on the locals, unleashing a shocking reign of murderous mollusk mayhem. Can the lieutenant do anything to stop their spread? Or will the human race be forever left in the snails' slimy wake? Directed by cult-filmmaker and TV veteran, Arnold Laven (Sam Whiskey).