In 2015, Tony Jenkins, one half of South Norwood Animal Rescue and Liberty (SNARL) began noticing reports of cat mutilations in and around Croydon, London. Following the scent, he and his partner Boudicca Rising unearthed a shocking history of animals deaths which would lead to a nationwide hunt for what it thought to be the UK’s first serial animal killer. Now with over 350 victims, the killer has been given many names: the Croydon Cat Killer, the M25 Animal Killer, the UK Animal Killer. The brutal “signature” display of the dismembered pets around the homes of their owners is a chilling indication of the killer’s intention to do harm to people as much as the animals. In an unlikely union between two renegade animal rights activists and the establishment, Tony and Boudicca are joined in following the trail of bodies by the RSPCA and the MET police. Together they balance the emotional demands of the case with the need for a clear minded approach to a bewildering and unrelenting string of attacks.