In the sweltering heat of a Boston summer, homicide detective Thomas Moore is drawn into a chilling case that strikes fear into the heart of the city. Dubbed 'The Surgeon' by the media, a methodical killer is targeting lone women with terrifying precision. As the investigation unfolds, Moore and his partner, the tough-as-nails detective Jane Rizzoli, uncover a haunting connection to Dr. Catherine Cordell, a renowned cardiac surgeon with a mysterious past. She is the sole survivor of a similar predator, whom she killed in self-defense. Now, the murders orbiting around Dr. Cordell suggest a sinister figure is stalking her once more, recreating the trauma of her past with a macabre accuracy. Tasked with stopping a killer who seems always one step ahead, Moore must protect Dr. Cordell while untangling the web of the past, in a race against time where the line between victim and survivor blurs.