Blaketon offers to help a guest at the pub find her missing son, but as his search progresses, the former sergeant is targeted by a mysterious assailant whose vendetta against him bears no boundaries. Meanwhile, David is left out in the cold on Peggy's birthday when she rejects his offer of a dinner party in favour of a date with an old flame who suddenly re-appears in her life after 20 years, Younger is delighted when he finally gets his driving licence, and Bellamy makes a shock admission to Rob when Gina asks the village bobby to get to the bottom of his strange behaviour after their break-up.