Series following people who protect and work closely with wildlife and domestic animals. RSPCA Animal Collections Officer Andy Sowdon is on the trail of a runaway cat, injured after a road traffic accident. We visit the Geltsdale Royal Society for the Protection of Birds reserve in Cumbria and get to see the important work of Investigations Officer Guy Shorrock and his dedicated team of workers and volunteers who protect one of England’s rarest birds, the hen harrier. And Tom Heap chats to RSPCA Chief Inspector Simon Parker about the work they're doing to help bring to justice those who persecute rare birds of prey.