They've braved the depths together—now it's time to fight for their future above. Oceanographer Dr. Leah Carter wasn't looking for a man—especially not a grad student with reckless charm, a haunted stare, and biceps that could curl her toes. But when her world collides with cave diving instructor and Air Force Reserve pararescue specialist Ash McCade, he ignites something hotter than a rescue flare. Living as aquanauts in an underwater habitat on the edge of the Cayman Trench, they explore deep reefs by day—and each other by night. But they may not be as alone as they think. Now the surface awaits. And the predators circling above might prove deadlier than those lurking below. Approximate length 433 pages.