Dr. Kate Rowan is spending several nights per week in Whitby while she works in the Whitby practice. Nick isn't happy at being left alone. Nick gets rebuked by Blaketon because his shirt isn't ironed. Blaketon says it shows lack of respect for the job. Lead has been stolen from the roof of a farm house and some out-buildings. Smoke pours from Greengrass' house and three young men who are camping on his land see the smoke and rush to help. Kate has discovered that she is pregnant and she thinks about the way a baby would affect her career, and Nick's. Lead has been stolen from a church roof. Blaketon has realised that there is something wrong in the Rowan household and he goes round to see Nick for a personal chat. Nick confides in him that he thinks he and Kate are drifting apart. Kate is back in Aidensfield and she runs into Nick. She tells him that she is pregnant. They have an emotional, heart-to-heart conversation. Kate Rowan has to make a tricky climb on to a church roof to give aid to a badly injured lead thief. Music in this includes "We Can work It Out", "Na Na Na Na, Hey Hey, Kiss Him Goodbye", "Magic Bus".

Ronald Pitts wants to buy Tom Abbott's farm, but the old man does not want to sell. One morning his sheep have been let loose. Furthermore Kate Rowan suspects that there is brucellosis on his farm, because a young girl, Jane Shields, has caught the disease apparently by drinking unpasteurized milk from one of his cows. Greengrass is going to church. He has not become a holy man though, but he tries to get a reward for finding a lost heir and wants to look into the church records. PC Ventress still has not quite got the hang of driving. On a nightly patrol he parks his police car in the middle of a river trying to avoid a flock of sheep on the road. When he leaves the car to get help he hears an eerie scream.

Aidensfield is in a fever of excitement when Nick and Kate return with their beautiful new-born baby girl and everybody showers them with presents. Only nobody else in the village knows that Kate is dying of leukaemia, and Nick tries to spend as much time with her and the baby as possible. He is even neglecting his job as police constable. That leads to several complaints against him because a thief is stealing petrol from cars in the village at night. Not even sergeant Blaketon's police car escapes the thief.

PC Rowan is on loan to the CID to investigate local gangster Frank Armstrong. But Rowan has other things on his mind as well. Katie is getting christened and he gets a visit from Jill Criddle, an old friend and colleague from the Met. By request of the CID she teams up with Rowan as his 'floozie'. They soon discover that Armstrong is spreading out his activities to include race horses. Armstrong is not the only one interested in race horses. Greengrass and his friend Billy Black, also known as The Horse Doctor, want to improve the chances of a certain horse in a race. Incidentally Armstrong is also very eager to talk to Black and has sent to goons to get hold of him. Unfortunately Black knows that Nick and Jill are cops!

Arthur Wakesfield surprises a burglar and tries to scare him off, but gets a heart attack from which he later dies in the process. The burglar, John Tinniswood, hardly fares any better, when he comes home because his wife nearly tears his head off, but she still gives him a false alibi when he is arrested for the crime. Wakefield's widow is sure it was him though and starts to follow him around anywhere he goes. Special constable Hector Cowley poses problems of another kind. He is overly officious and a pain in the neck to everybody from sergeant Blaketon and down. And to a lot of other people for that matter. Cowley counts on winning a prize for his gooseberries at the local fair, but somebody destroys them on the night before.