Detective Inspector Laura Scott is making a fresh start. Following the accidental death of her daughter, Kara, she has transferred from the Met up to Yorkshire. The slower pace of life and change of scene proves beneficial, up until three young women are brutally murdered. Laura has to face the fact that a serial killer is operating on her patch, and the case file has landed on her desk. With no forensic evidence or apparent motive, Laura soon - and unofficially - contacts an old friend who had also been her lover; Jim Elliott, an ex-FBI profiler now living in the UK and running a successful PR company in London. Jim reluctantly agrees to consult on the case, to bring his 'mind hunting' skills to the aid of Laura and her team, to hopefully identify and apprehend the homicidal maniac known as the Tacker.