A research laboratory opens on the outskirts of the West Country town of Abbeyford, bringing with it new people, jobs, prosperity and publicity to the area - as well as a mob of protesters and animal rights activists. The team at Abbeyford police station take this new level of civil disorder in their stride - until a fatal car bombing of one of the laboratory's head scientists means more drastic measures must be taken... Detective Sergeant Kate Redman is struggling to come to terms with being back at work after a long period of absence on sick leave; not to mention the fact that her erstwhile partner Mark Olbeck has now been promoted above her. The stakes get even higher as a multiple murder scene is discovered and a violent activist is implicated in the crime. Kate and the team must put their lives on the line to expose the murderer and untangle the snarl of accusations, suspicions and motives. Snarl is the fourth book in the Kate Redman Mysteries series, from bestselling crime writer Celina Grace, author of Hushabye, Requiem and Imago.