As a massive tsunami heads for the east coast, Laura must save Rich by heading to North Carolina where Miles and his family are trying to escape with their lives.
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Cirko and his assistant figure out the origin of the unidentified species and subsequently suffer mysterious mishaps before they can fully report their findings.
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Laura attaches a GPS device to one of the creatures in order to track it. Cirko testifies before the Pentagon that the unidentified species is extremely dangerous.
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Oceanographer Laura Daughtery discovers an unknown life form and unearths a vast government cover-up. Across the globe, something mysterious lurks in the seas.
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A mysterious power outage erases all of Laura's GPS tracking data. Lee and Cirko, who have been secretly following her, ask Laura to join their investigation.
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Laura and Rich make a startling discovery while diving in their struggling submersible. Miles tries to reunite with Nimrod, and finds that Nimrod is not alone.
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