At a remote, mountaintop campground, and after a devastating revelation about Ian's past, Jack and Joan take a moment to unwind with a friendly bunch of fellow tourists. When a high-end caravan is stolen, everyone becomes a suspect and, it turns out, everyone has something to hide. Joan's frustration with Jack puts her life in danger after the thieves return to steal her motorhome.

As Jack and Joan prepare for her first southern hemisphere Christmas by the beach, a reef dive goes catastrophically wrong, and Joan does all she can to save an injured diver. With a young woman's life in the balance, Joan and Jack discover the accident is really a case of sabotage. The mystery hits home for Jack, who secretly seeks out a woman from his past to make amends for his mistakes.