Creeping dread! Crawling terror! Oozing fear! The local beaches go from fun-filled swim-fest to horrifying slugfest when a horde of gargantuan vampire snails ooze their way into the water supply -- and threaten to suck the life out of mankind! Packed with nerve-jangling "suspense and excitement" (Variety), this slimy sci-fi thriller delivers "superior monster action" (VideoHound's Movie Guide) that'll pull the most hardened sci-fi cynic right out of his shell! Lieutenant John Twillinger 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 Twillinger do anything to stop their spread? Or will the human race be forever left in the snails' slimy wake?.