Black Ice Protocol

When a Russian stealth submarine disappears beneath the Arctic ice, former Navy SEAL Jack Raines is assigned to track down the rogue admiral responsible. His investigation leads him to an ancient Cold War weapon system called the Algorithm, which has fallen into the wrong hands and threatens global stability. As Jack navigates a perilous undersea war and uncovering dangerous secrets, he must operate in a world of shifting loyalties and deadly deception to prevent a new catastrophic conflict.