Homicide Detective Brie Beaumont returns in a riveting psychological thriller featuring a cast of dark and troubled characters. Something feels amiss about the group of seven friends who charter Maine Wind for the last cruise of the season that turns deadly when one of them is lost overboard. While making for home port, Brie investigates a case that becomes more enigmatic at every turn. As she drills down through layers of hatred, mistrust, and deception, old crimes come to light, and tensions ratchet up with each passing hour. When a storm looms at sea, the closed environment of the ship weighs heavy on them all as death stalks this ill-fated cruise.