Baffled by a seemingly supernatural connection to his critically injured sister, an FBI special agent heads to the Oregon coast in search of a more plausible explanation for his sudden ESP, only to discover more puzzling mysteries.

Political speechwriter Becca Matlock is at the top of her professional game, working for the re-election campaign of New York's popular governor, when she receives the first phone call: "Stop sleeping with the governor or I'll kill him."

FBI Agent Dillon Savich is on a challenging case involving the kidnapping of two teenage boys when trouble boils up in his personal life. His younger sister Lily has crashed her Explorer into a redwood in California's Hemlock Bay. Is it another suicide attempt, the second since the loss of her young daughter some seven months before? Savich and Sherlock discover that four of Lily's paintings, left to her by their very famous grandmother, artist Sarah Elliot, now worth millions, are at the heart of an intricate conspiracy.

When FBI agent Dane Carver's twin brother, Father Michael Joseph, is brutally murdered in his San Francisco church, husband-and-wife agents Lacey Sherlock and Dillon Savich take a personal interest in the investigation. Nicola "Nick" Jones, a homeless woman and the only witness to the shooting, is scared out of her mind because she is trying to hide from her own monsters.

Lacey Sherlock's life is forever changed when her older sister's body is discovered in an abandoned warehouse. She is the fourth victim of the String Killer, the name given by the media to a murderer who leads his victims into a maze with a ball of twine. Seven years after Belinda's death, Lacey, now an FBI agent, is paired up with computer whiz Dillon Savich, who has developed a predictive program to aid in the apprehension of serial killers.