When a nuclear-powered submarine, the Tiger Shark, sets out to investigate a series of mysterious disappearances near the Arctic Circle, its fearless crew finds itself besieged by electrical storms, an Unidentified Floating Saucer, and lots of hairy tentacles.

Supplements Audio commentary by producer Alex Gordon and writer Tom Weaver New video interview with actor Brett Halsey Original theatrical trailers and radio spots Stills galleries featuring production and publicity photographs

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