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Narrated by: C Derick

Unabridged — 3 hours, 44 minutes

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Overview

Beneath the North Atlantic, something is stirring.

When Dr. Ava Tan and her research team aboard the Rusalka detect unexplained anomalies deep beneath the ocean's surface-electromagnetic pulses, erratic temperature shifts, and an eerie rhythmic tapping-they launch an expedition that will redefine everything humanity knows about the deep.

Their mission takes a chilling turn when their submersible, Barracuda-2, stumbles upon a massive submerged structure-a craft of unknown origin buried beneath...