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The Rift

The Rift (Spanish: La grieta) is a 1990 Spanish science-fiction horror film directed by Juan Piquer Simón and starring Jack Scalia, R. Lee Ermey and Ray Wise. The story concerns Wick Hayes (Scalia), an engineer who is blamed for the disappearance of the submarine he designed, and leads an investigation team to the depths of the ocean, where he encounters an array of abnormal creatures. Part of a wave of underwater fantasy films released around 1989, it was retitled Endless Descent for the U.S. market.

Description adapted from Wikipedia contributors, The Rift (1990 film) · CC BY-SA 4.0. Text adapted for this entry.

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The story, including the ending.

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Source plot synopsis — includes the ending

An experimental submarine, the Siren II, with an experienced NATO crew, is sent to find out what happened to the missing Siren I. Wick Hayes, the designer of the sub, blames the Contek corporation's modifications to his original design. The Siren II is captained by experienced officer Captain Randolph Phillips. The Siren II traces Siren I's black box to an underwater rift. They are surrounded by a toxic weed, although an on-board scientist says plant life at this depth is impossible. Siren II escapes the weed by reversing the polarity of the hull, although some of the weed gets into the sub. Later, they surface in a cave system where they discover that Contek has been engaged in illegal genetic engineering experiments that have produced a variety of mutant creatures.
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Source and revision history ↗ · Adapted from Wikipedia contributors, The Rift (1990 film). Section headings and formatting adjusted. · Content license