Charlotte Graham is at the center of the most famous kidnapping in Chicago history. The FBI and local cops found her two abductors, killed them, and rescued her, but it took four long years. The fact that she was found just three miles from her home, had been there the entire time, haunts them. She’s since changed her identity, found a profession she loves, and rebuilt her life. She’s never said a word — to the cops, to her doctors, to her family — about those four years.

Ann Silver is a cop’s cop. As the Midwest Homicide Investigator, she is called in to help local law enforcement on the worst of cases, looking for answers to murder. Hers is one of the region’s most trusted investigative positions. Paul Falcon is the FBI’s top murder cop in the Midwest. If the victim carried a federal badge or had a security clearance, odds are good Paul and his team see the case file or work the murder. Their lives intersect when Ann arrives to pass a case off her desk and onto his.

Commander Mark Bishop is deliberately low-key: "I'm in the Navy." But commanding the ballistic missile submarine USS Nevada, keeping her crew trained and alert during 90-day submerged patrols, and being prepared to launch weapons on valid presidential orders, carries a burden of command like few other jobs in the military. Mark wants someone to come home to after sea patrols. The woman he has in mind is young, with a lovely smile, and very smart. She's a civilian, yet she understands the U.S. Navy culture.

An FBI undercover operation gone bad convinces Rae Gabriella to move near her hometown and work as a private investigator with another former agent. But the small town of Justice, Illinois, is not as safe as she thinks. Attractive and stylish young women, just like Rae, are quietly dropping dead in their hotel rooms, with money and valuables still untouched. When the next victim turns up just a few rooms away from Rae's hotel room, the grieving parents hire her to investigate.

EMS helicopter pilot Penny Carlton is used to high stress situations, but being forced to land on a mountain in a raging storm with a critical patient - and a serial killer on the loose - tests her skills and her nerve to the limit. She survives with FBI Special Agent Holt Satterfield's help. But she's not out of the woods yet.