Demons of the Swamp

A depraved bloodsucking sinister force is terrorizing the backwoods. When flirtatious sexpot Liz Walker (Yvette Vickers) is thrown into the swamp by her jealous husband (Bruno Ve Sota), she's taken hostage by giant leeches and held captive in their underwater cavern of horror. Other townsfolk are soon abducted by the leeches, joining Liz in the monster's subterranean lair. The locals desperately battle the mammoth leeches in an explosive climax! (official distributor synopsis)