Leviathan

Six weeks into a three-month deep-sea mining contract, the crew of an underwater station on the Atlantic floor is restless and running low on morale. When geologist Beck and a fellow miner discover a sunken Soviet vessel during a routine survey, they bring back a sealed safe containing a ship's log and a flask of vodka. The ship, the Leviathan, was officially lost at sea years earlier.

Two crew members drink from the flask. One dies in his sleep. The other begins to deteriorate rapidly — hair loss, skin blistering, convulsions — and is placed in the medical bay. When the doctor reviews the Leviathan's log, he finds classified entries suggesting a Soviet genetic experiment had been conducted aboard: an attempt to create an enhanced human that went catastrophically wrong. The experiment mutated the crew. The ship was deliberately sunk to contain it.

The infected crewmember dies. The body dissolves and fuses with the first victim, forming a hybrid creature that reanimates and begins hunting the surviving crew. The station's communications are jammed — a corporate cover-up intended to ensure the experiment never reaches the surface. With no rescue coming and a mutating predator loose in the facility, the survivors fight to reach the surface before the station is destroyed or they are absorbed.

The creature grows with each victim it assimilates, becoming larger and harder to kill. Beck leads the remaining crew in a desperate escape through the flooded corridors and up through the ocean toward a rescue ship. When they finally breach the surface, the corporation's representative is waiting — relief turning to contempt as Beck, understanding what was done to them, confronts her directly.