Bergerac - Season 4 (1985)

Looking for sunken treasure, the Deep Gold diving expedition makes the mistake of trying to scam crooked property developer B. J. Farrell into financing their supposed finds and end up having to leave Jersey. Jim, however, is more interested in why Farrell is visiting Miss Broome, a drunken recluse, with whom he would seem to have no connection. In fact she is his mother but she is being used by a rival of her son to draw him into a trap, which Jim must prevent.

Philippa Vale returns to the island to recover the stolen diamonds she hid underwater on her last visit, unaware that Jim had anticipated their hiding place and recovered them. Her presence attracts the arrival of a criminal gang and a bent copper, in whose capture Philippa ends up by assisting Jim.

A trio of young punks are snatching handbags around the island, their victims including fashion designers Simone and Paul Demoins, whose latest sketches are stolen. Louis, the least cold-hearted of the three robbers, befriends teenaged runaway Chrissie, who has come to Jersey to look for an aunt and who is the nanny to the Demoins' neglected little girl Michelle. Whilst Paul and Simone are in Paris, Chrissie and Michelle go on the run with Louis. Jim tracks them down but there is no happy ending.

When temperamental tennis star Rory O'Brien comes to play in Charlie's charity match, accompanied by manager McKennon and brother Frankie, Frankie asks Jim to give Rory police protection, shortly after which Rory is the victim of a hit-and-run. On the face of it somebody seems determined to stop him from taking part in the match but why are two shadowy men interested in a tennis racket Rory gave to Deborah, and how is a sweet old lady whose mother was a tennis champion innocently involved? Jim must find out.

Piggish German actor Henry Hoffman antagonizes everybody on set whilst making a film about Jersey's occupation by the Nazis, a fact which adds to local hostility and to the list of suspects when Hoffman receives death threats. Further complications are provided by the fact that Hoffman's father, a Wehrmacht officer, was executed by firing squad during the war for raping an islander who is still alive and whose family may be seeking revenge. Thus when Hoffman is blown up at sea Jim is left with no end of potential murderers.

Jim feels exploited when MP Geoffrey Newton asks him to catch would-be assassin Mick Davies, who is threatening to disrupt the government's trade deal with Ahmed, a former terrorist who massacred Mick's Arab friends but is now a leading politician in his own Middle East country. Arms dealer Nigel Ripley, supplier of the guns for the massacre, also receives Mick's calling card, 'Avenge O Lord'. Jim encounters Mick, who spares him, but can a by-the-book cop outwit a seasoned commando?

Jim investigates when Charlie expresses concern at the influence supposed medium Raoul Barnaby has over elderly Mrs. Jardine with his story that he was contacted by the spirit of a little girl who died in a fire twenty years earlier. Jim finds that she was accidentally killed by Mrs. Jardine's son, who then committed suicide out of remorse but Plemont, the detective in charge, hushed matters up. After Mrs. Jardine has accused Barnaby of being a fraud, her niece Pauline, who is in league with Barnaby to rook the old lady, pushes her aunt downstairs. Following Mrs. ...