Michael Harvey is mortally ill and his son Ronnie and his girlfriend Susan is preparing a surprise party to celebrate his birthday, which he knows will be his last. During the party Michael Harvey asks Susan to be his wife. Shocked the young woman rushes out of the house and rides away on her bicycle. On her way home she has an accident and nurse Bolton is suspected of causing it, but PC Rowan thinks that something is not quite right, and Susan's bike is missing. Greengrass buys a rare samovar from a family of Russian gypsies, but discovers that there are more "rare" Russian samovars around. PC Rowan is thinking of getting a promotion and wants to take his sergeant's exams.

Glenda Marriot wants her aunt Mrs. Barton to sell her farm and move to an old people's home, but the old lady says she can still manage together with her farmhand Jed Harrison. Glenda tries to take legal steps to make her sell, but somebody must be more intent on getting the old lady out and tries to scare her away. Vernon Scripps' latest idea is hot rods. He wants Bernie to build him one so that he can race it. PC Ventress is showing Special Constable Harold Emney around when he sees Gina leaving the maternal ward at Ashfordly Hospital. Of course he puts two and two together and gets five and before long everybody knows that she is pregnant - everybody that is except Gina and the assumed father Phil Bellamy.

Vernon Scripps has really made a killing on the paintings he bought from Steve Crane's mother. He kept one of them though. The one called "Tower Bridge". He organizes an auction for the benefit of Sir Nigel Fethersone's charity foundation and is "persuaded" by Oscar Blaketon to donate the "Tower Bridge" painting himself. But somebody steals the painting and he gets David to make a duplicate. Jenny surprises an intruder at Sergeant Merton's house. He does not hurt her, but only looks firmly at her and walks calmly away. The intruder is Eddie Harvey and he wants the sergeant to tell him the name of the man who grassed on him and an accomplice on a bank robbery. If Merton does not yield Harvey will kill Jenny.