Boon - Season 4 (1989)

Ken is engaged by Marion Kershaw to search for her missing husband, a businessman involved in the import/export trade. Ken and Harry find themselves handling stolen goods when they try to assist the police in a case involving the international theft of antiques.

Ben Fowkes, a young army demolition export, has deserted, and his father hires Ken to try and find him; Ben is now involved in an illegal boxing match in order to raise money to buy himself out, and Ken tries to stop the fight. Harry and Rocky, meanwhile are busy looking after Tinkerbell - a Champion greyhound.

Helen gives shelter to a battered wife and her two sons. The woman's doctor husband almost convinces Ken that his wife is having a nervous breakdown, but hie true character is revealed when he attempts to abduct the boys. Harry, meanwhile, is investigating thefts from patients rooms in a nursing home.

Ken is on the two brothers who have each been left a half-share in their father's classic car - literally. At the same time, he assigns Rocky to trail an attractive young university student who seems to be suddenly in possession of a great deal of money. After suspecting her of selling her body for drugs, he discovers a more mundane source of income.

Ken is hired as a bodyguard by Bob Messener, a club owner on the run from brothers of his ex-partner Sammy Robinson who is in prison - or so Bob thinks. Harry, meanwhile, has a nasty environmental problem apparently caused by his farmer neighbour.

Barbara Lake hires Ken to find out why she is receiving letters signed by her husband, who died in a plane crash six months ago. The letters leads her to a large amount of hidden money, but someone is watching her every move. Meanwhile Helen's cycling nephew Ian is being blackmailed by a doctor of a rival cycling team.

Ken uncovers the secret life of Nina, wife of the unpleasant, violent and scheming Detective Sergeant Brock. Meanwhile Harry's plans a medieval banqueting tents at Woodcote Park do not meet with universal approval.

An Argentinian polo team are practicing at Woodcote Park. While Helen makes eyes at the captain, Ken keeps his on Merrily Curtis, an English girl involved in a insurance scam over a brood mare. Back at the office Rocky agrees to collect a valuable painting for a client; he is about to become a pawn in a war between a husband and wife.

Ken is hired by the secretary of Sandford Meats to find out who is stealing dictaphone tapes from her desk, and uncovers scheme by Mr Sandford and his son-in-law to import pornography. Meanwhile, Harry has a spot of bother with his latest acquisition - a talking parrot.

Ken has spent the night with Rebecca, while burglars have vandalised his office. Harry is looking at buying a club, but is warned off by his accountant, who tells him that his finances are in a bad way. Both men seem to be facing an uncertain future.