Tony and Dave go to a sudden death. Monroe arrives and thinks it is a suspicious death. The man was a locum working at the doctors. Dave and Tony are called to a flat where arguments were heard. A man is holding a child hostage. June takes a mother to a chemist. While in the chemist a customer becomes abusive when his prescription is not filled. Greig thinks he might have killed once already. Reg talks to a doctor about a break-in at her surgery where prescription pads were missing. Conway is there to negotiate.