After a hostage rescue goes wrong, superintendent Sandra Pullman is put in charge of unsolved crimes. With little resources and no back-up, she decides to recruit three ex-policeman. However, times have changed, unlike her new recruits. Jack Halford has yet to get over the loss of his wife, Brian Lane is over-obsessed and over-medicated, and Gerry Standing is not quite the ladies' man he used to be. They might have the experience but it's not like the old days. Not only are they chasing criminals, but they are dealing with a new police force which does not always appreciate their old-style policing.