Lieutenant Dani Lewis returns in a gripping thriller that fans of M.J. Arlidge and Elly Griffiths will love. A young woman has disappeared without trace from a Navy ship - is it a missing person case or something far darker? Lieutenant Dani Lewis, star investigator of the Navy's Kill Team, must mine the shadows of the ship and the secrets of its crew to uncover why the girl might run, or what might motivate a predator to take her. But as Dani relentlessly pursues the truth, threads emerge which take her back to the dark conspiracy revealed aboard the submarine Tenacity. And closer to a killer who continues to taunt her from prison. Is this a simple missing person case, or is the hunter about to become the prey?