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.

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.

As a former smokejumper, arson investigator Bri Tucker knows her way around fires. But after a mysterious blaze takes the life of a former colleague, Bri inherits a curious puzzle from him that raises questions about several fiery deaths. Someone, however, doesn’t want her picking up where he left off in search of answers. When she teams up with ATF Special Agent Marc Davis to solve the puzzle, the case heats up—as does the attraction between them.

Detective James Holton has been honorably discharged from the Army Criminal Investigation Division due to wounds sustained when an IED blew up near him. Now with the Lake City Police Department, he's rooming with his good buddy and partner, Cole, while he figures out his family dynamics. Physician Assistant Lainie Jackson is eighteen months out from an attempted murder perpetrated by her ex, which ended when she managed to grab the weapon and shoot him. When he appears to have survived and is back to finish the job he started, Lainie insists it's not possible.

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.

Radio-talk-show host Eve Reilly is used to backlash from her pot-stirring on-air commentary and interviews. But now it seems a disgruntled listener is resorting to more than angry words to express their displeasure. When a suspicious package arrives on her doorstep, Eve turns to law enforcement for help. Police Detective Brent Lange can't find any evidence to link the string of unsettling incidents that follows, but he's convinced they're connected. As the harassment grows more menacing, it becomes clear someone wants Eves voice silenced - permanently.

Elite Guardian Charlie Lee knows that there is no future with the woman he loves—fellow Guardian Lizzie Tremaine. And, he gets it—as a single mom, Lizzie has to protect her daughter. But more than anything, he wants the chance to prove himself. Then, the unthinkable happens—while working undercover, Charlie is seriously injured…and his memory of the past four years is lost. Could it be the fresh start that he didn’t realize he longed for?

CIA analyst Brynn Taylor developed a new program to combat terrorism, and she invited members of foreign intelligence agencies to America to foster cooperation between countries. Now one of them, Egyptian spy Remon Riad, is missing. Jack Hudson has been working for the Strategic Neutralization and Protection Agency for almost nine years and takes the lead in hunting down the missing spy. But he isn’t at all pleased to find out Brynn is involved.