Rookie team member Rachael faces a baptism of fire on a night shift, from a face-off with a driver threatening her colleague Lee's family, to the pursuit of a high-speed Mercedes carrying with a pregnant passenger. Elsewhere, Liam plays a pitch-black game of hunt the knife in the aftermath of a terrifying armed robbery, dog handler Mo deals with a double fire before arresting a man who appears to be stealing from a phone box, and a motorist picks up the phone and calls the police to report interceptor Chris for stealing his car