Paul and Steve plan to relax and take in some fresh sea air on board a luxurious trans-Atlantic liner … that is until they meet the elusive Sam Portland. After the innocent introduction, grave danger lies ahead for the couple. As events unfold, a concoction of murder, blackmail and terror ensues. Life on board the ship requires cruise control as Temple attempts to get to the bottom of the secret behind Sam’s lost years … And just who is Madison?