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.

When Jack is struck by a hit-and-run driver, it sparks some unexpected truths and the return of a threat from Jack's past. As Jack recovers, he and Joan track down Ian's long-lost son, who holds the keys to the mystery. But is she ready to put the past to rest? And will the new threat facing Jack see the end of this journey together?

The search for answers about Jack's past leads him and Joan into the path of two warring brothers whose fight over the family farm escalates when one of the brothers is injured in a suspicious fall.

In a small surfing town, Jack and Joan come to the aid of a victim of a hit-and-run, local nurse Gillian. When they learn she has been implicated in a series of suspicious deaths at the hospital, they realize many people may have wanted her dead.