Snakehead Terror

Plot

Snakehead fish invade Cultus Lake in the small town of Cultus, Maryland, and the town's police department poisons the lake, seemingly killing all of the fish. Two years later, bodies begin showing up in the lake, and town Sheriff Patrick James temporarily closes it. After unseen creatures eat Patrick's daughter Amber's boyfriend James and James' friend, local doctor Jenkins gives Patrick a tooth found in one of the bodies. Patrick tries to convince the town's mayor to shut down the lake as the town suffers economic troubles. Marine biologist Lori Dale arrives to help determine the cause of the deaths. She identifies the creatures as unusually large snakeheads and theorizes that something in the lake is causing them to grow. After more deaths, Lori discovers the snakeheads have been drugged with human growth hormones. A fisherman captures one snakehead, convincing the mayor the lake should stay open. Patrick and Lori head out on the lake to find the source of the hormones. Amber convinces her friends Jagger, Luke, and Craig to help her kill the snakeheads. Patrick and Lori find an overturned boat and encounter the snakeheads. They see Colin, Jenkins' brother, pouring something into the lake; Colin flees, and Lori identifies the liquid as human growth hormone. On Craig's boat, the group discovers the snakeheads are cannibals. They follow some fish and nearly collide with two fishermen. The snakeheads attack both boats, eating Craig and one fisherman; Luke is knocked overboard, and Jagger accidentally kills the other fisherman by shooting his boat's gas tank. Amber and Jagger crash on an island and become stranded. They find Luke washed up alive. Patrick and Deputy Reece sneak into Jenkins' lab and find a receipt for 5,000 units of human growth hormone. They arrest Jenkins, and he reveals he put the hormones into the lake to increase the fish population for Colin's bait shop after the poisoning, not knowing the snakeheads were still in the lake. On the island, Amber, Jagger, and Luke find a cabin and a half-devoured man inside. Luke goes further and finds a snakehead devouring a woman; the snakehead attacks Luke, injuring his leg, but Amber kills it with an axe. Patrick finds out Amber is on the lake, and he and Lori head out to rescue her, with Lori bringing an electric stick. The snakeheads ram their boat, causing Lori to accidentally render the controls useless, and they crash into a dock on the island. They see a giant, whale-sized snakehead before heading onto the island. Colin digs a hole to bury the hormone packages but is killed by the snakeheads. Snakeheads attack Amber, Jagger, and Luke in the house; they kill several, but Luke is killed. Patrick and Lori arrive outside, give Amber and Jagger directions to escape, and reach an electrical shed, planning to electrocute all the snakeheads. Lori rescues Amber and Jagger, and the three girls kill all remaining snakeheads at the cabin before Patrick knocks down an electric cable. When Lori, Amber, and Jagger arrive at the dock, Lori dumps the cable into the water, electrocuting and killing the remaining snakeheads. Patrick, Lori, Amber, and Jagger embrace as the fried snakehead bodies burn in the water.