Mr. and Mrs. Thornton have been burgled. Their house is for sale and there was a similar break-in earlier in the same week. Sergeant Merton thinks that the burglar poses as a potential buyer and breaks in later. PC Crane has been absent minded for a couple of days. He is expecting a visit from a woman. She is somewhat older than him and soon the village is booming with gossip. No blame on the villagers though. She failed to mention that she is his mother. A new guest, Lennie Beech, at the Aidensfield Arms flirts with Gina, but Oscar Blaketon does not trust him.

Safe breakers break in at Adams Brothers. One of them accidentally activates the alarm just as PC Mason passes on his motorbike. They manage to get away, but the next day their driver is found floating around dead in Whitby harbour. Is this the revenge of his accomplices for leaving them when the alarm went off or...? PC Mason also suspects it was an inside job because there was an exceptionally large amount of money in the safe. Meanwhile the rest of the gang stays comfortably at the Aidensfield Arms planning how to get another crack at the safe. It is Dawn's birthday and Gina organizes a surprise party for her. But Dawn is not the only one who gets surprised. Alf and PC Younger wonders why PC Wetherby disappears every day at lunch break and Oscar Blaketon bets them £5 that he can find out in a matter of hours. He gets a surprise too.