Growing up, Dana Carlson and her older sister, Julie, are inseparable—Dana the impulsive one, Julie calmer and more nurturing. But then a devastating secret compels Dana to flee from home, not to see or speak to her sister for sixteen years. When she receives the news that Julie is seriously ill, Dana knows that she must return to their hometown of Black Bear, Minnesota, to try and save her sister. Yet she arrives too late, only to discover that Black Bear has changed, and so have the people in it. Julie has left behind a shattered teenage daughter, Peyton, and a mystery—what killed Julie may be killing others, too. Why is no one talking about it? Dana struggles to uncover the truth, but no one wants to hear it, including Peyton, who can’t forgive her aunt’s years-long absence. Dana had left to protect her own secrets, but Black Bear has a secret of its own—one that could tear apart Dana’s life, her family, and the whole town.

    But when it comes to murder, Officer Susan Marlan never trusts a simple explanation, so she's just getting started.Meanwhile, college professor Eric Evans hallucinates a young boy in overalls: a symptom of his schizophrenia - or so he thinks. But when more bodies turn up, Eric has more visions, and they mirror details of the murder case. As the investigation continues, the police stick with their original conclusion, but Susan's instincts tell her something is off. The higher-ups keep stonewalling her, and the FBI's closing in.Desperate for answers, Susan goes rogue and turns to Eric for help. Together they take an unorthodox approach to the case as the evidence keeps getting stranger. With Eric's hallucinations intensifying and the body count rising, can the pair separate truth from illusion long enough to catch a monster?

    Only one person stands in his way: a lonely Englishwoman on an isolated island, who is beginning to love the killer who has mysteriously entered her life. All will come to a terrifying conclusion in Ken Follett's unsurpassed and unforgettable masterwork of suspense, intrigue, and the dangerous machinations of the human heart.