A killer lurks beneath the waves of the western Pacific Ocean. The USS Encinitas, the first attack submarine crewed by both men and women, stalks the Crescent Moon, a renegade Iranian sub armed with nuclear-tipped missiles. But another predator hides aboard the American sub, a murderer who has already left a trail of dead women behind on shore. While the crew of the Encinitas plays a deadly game of hide-and-seek with the Crescent Moon, NCIS investigator Linus Schag must discover the killer's identity before his – or her – blood lust leads to the submarine's total destruction. Editorial Reviews: "e;A fast-space submarine, as well as a gripping murder mystery..."e;--Midwest Book Reviews"e;The Killing Depths has best seller written all over it."e;-- Liam Saville, author of Predator Strike!"e;... a non-stop thrilling adventure."e;-- Mallory Hearts Review"e;...a riveting thriller that you'll have a hard time putting down."e;-- Jay Allan Storey, author of Eldorado