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From the liner notes

In this edge-of-your-seat thriller, some of the world's top scientific researchers learn why no one has lived to solve the age-old mystery of what lies Beneath Loch Ness! When a renowned paleontologist is killed while attempting to prove his theories about Loch Ness, it's up to his protege, Case Howell, to lead a second expedition into the murky depths of the Loch! There, trapped amid a series of uncharted labyrinths, Case makes a deadly discovery - a terrifying giant creature thought extinct for millions of year! Directed by the special effects master behind Rush Hour, Dungeons & Dragons, Blade, and Mortal Kombat: Annihilation - get ready for a pulse-pounding adventure as Case is forced to use every high-tech weapon at his disposal to make it back to the surface alive!