Murder on the high seas: After Martin Caldwell witnesses the death of his wife in a hit-and-run incident on Christmas Eve, he is persuaded to take a vacation, a cruise around the Orient-pre-booked by his wife, to help him to come to terms with his loss. However, on boarding the cruise ship, he is confronted by several people from his past, each with a motive to see him dead.
After the botched attempt to to kill him on Christmas Eve, the clock is now ticking. The killer has just seventeen days until the cruise terminates in Bangkok; seventeen days in which to take the ultimate revenge for the actions that devastated a life.