Series 4

The team at Hartley police station await the arrival of the new inspector. Having lost Insp. Darbley, it will be good to have a man back in charge of the place.

Insp. Kate Longton leads an urgent search to save a life after receiving an anonymouse telephone call.

Insp. Longton agrees to a meeting about a forthcoming speaking engagement, but finds herself in a perilous situation.

Insp Longton tries to protect some children from a deadly habit.

Sgt Parrish demands to know why Insp Longton has taken Sgt Beck's name off the duty sheets.

P.C. Danny Sparks thinks about quitting the force, but Insp. Longton has decided to buy a house locally.

Insp Longton is struck by the resemblance between a missing husband and an artist's impression of a wanted man.

Insp. Longton becomes involved in the case of a young foster mother accused of shoplifting.

D.S. Bernie Duckworth faces a family tragedy when his daughter is knocked down by a lorry.

Insp. Longton enquires after John Morton, a dangerous young man who has returned to Hartley.

An elderly man reports hearing a threatening voice calling from outside his isolated house - in German.

Insp. Longton attends a report of assault, and examines her relationship with John Holden.

Insp. Longton tries to unravel the secret behind the strange behaviour of seventeen-year-old Simon Bailey.

Insp. Longton clashes with D.C.I. Mark Perrin over an armed robbery.