The team investigate the murder of an ex-army recluse and archaeological enthusiast and suspect a building dispute could provide a motive. Things get complicated when his estranged wife and her lover show up in the village with money in mind. Meanwhile, Vernon attempts to raise the depressed spirits of his young relative Gareth by matchmaking him with Rosie. After a disastrous date, Rosie orders Vernon to draw Gareth's attention away from her, but his plan to do so leaves David convinced he has a chance with the beautiful mechanic, causing him and Gareth to become rivals for her affections, whilst Jenny's erratic behaviour leaves Merton worried.