A tenacious Manhattan police officer determined to stop a serial killer who leaves playing cards at the scenes of unrelated victims teams up with a brilliant professor whose book has been connected to the murders against a backdrop of high-profile tabloid speculation.

In the space of a week, she has committed theft and fraud, resisted arrest, assaulted a police officer, and is considered a dangerous fugitive from the law. It's all because of one man, Regan Banks. He viciously killed the only person in the world who matters to Harriet--and he plans to kill her next. As she recklessly speeds toward the dark side--and finally crosses it--Harriet won't stop until Regan pays for the many lives he has taken.--

"A series of shootings exposes San Francisco to a methodical yet unpredictable killer, and a reluctant woman decides to put her trust in Sergeant Lindsay Boxer. The confidential informant's tip leads Lindsay to disturbing conclusions, including that something has gone horribly wrong inside the police department itself. The hunt for the killer lures Lindsay out of her jurisdiction, and gets inside Lindsay in dangerous ways. She suffers unsettling medical...