Dave joins the staff full time as Karen's replacement. A truck carrying toxic waste crashes and the driver and an attending policeman are both treated for contamination but a paper boy who was at the scene ignores his symptoms and dies. The company owner is reported to the police. Two soldiers return on leave from service in Northern Ireland: one of them, suffering from post-traumatic stress disorder, scares his wife, causing her to trip and fall out of a first floor window. Mark abandons the department to take up a job with a tobacco company; Ash realises he leaked the fake closure story so the staff would be too relieved about not being closed to complain about the extra work.