Nicholas Boulton

In the penultimate episode of the season, Stannis confronts a troubling decision while Jon returns to The Wall.

Martin expresses some negative views when Louisa reveals she will be interviewing for the headteacher's job and Pauline worries that something is up when Al behaves in a secretive manner, and is later seen semi-naked in Louisa's home. A well-to-do couple come in to the surgery to ask Martin to grant them a disabled parking permit for the village, but a mishap sees them leave in disgust and cause mayhem in town.

The Doctor takes Martha to New Earth, in the far future. But when they find the streets being ruled by the sinister Pharmacists, they must brave the ordeal of the mysterious Motorway in order to discover the terrible secret at the heart of the city.

A computer tycoon involved in a car accident dies after a supposedly successful operation. Kavanagh must find out what happened when he prosecutes on behalf of the widow. At home he and his wife face another crisis when their son fails his A levels.