Mercy Brennan followed in her father's footsteps in a law enforcement career, but she has no interest in any other connection to him. A US Marshal in St. Louis, Missouri, she's assigned to a joint task force with the St. Louis PD that puts her back into contact with her father and in the sights of St. Louis's most powerful gang. When the gang has reason to believe Mercy has possession of some highly sensitive and incriminating information, her boss assigns Mark St. Laurent - a Deputy US Marshal and Mercy's ex-boyfriend - to get her out of town.

Wynter Evans is a promising young reporter for a television station in St. Louis, but even a bright future doesn't take away her pain over the disappearance of her brother nine years ago. So when she stumbles across a photograph of a boy with an eerie resemblance to him, she can't pass up the chance to track him down. With research for work as her cover, she sets out with one of the station's photos for the place where the picture was taken: the town of Sanctuary.

Now that Alexandra "Alex" Donavan is finally free of her troubled upbringing, she's able to live out her childhood dream of working for the FBI. But soon after she becomes a member of the FBI's elite Behavioral Analysis Unit, authorities in Kansas and Missouri contact them about bodies found on freight trains traveling across the country - all killed in the same way.

No one needs to push Nikki Boyd to excel on the Tennessee Missing Person Task Force. The case of her own missing sister, still unsolved after 10 years, is the driving force in her work. When a Polaroid photo of a missing girl shows up at a crime scene, Nikki quickly recognizes similarities to the past. The closer she gets to the abductor, the more she feels that this case is getting personal and that she is not the hunter at all - but actually the one being hunted.

Police officer Isabelle St. John loves her crazy, loud law-enforcement family. And she knows they'll be there for her when things get tough. Like when her partner is murdered and she barely escapes with her own life. Determined to discover exactly what happened, Izzy's investigation sends her headfirst into a criminal organization, possibly with cops on the payroll - including someone from her own family. With her dead partner's handsome homicide detective brother Ryan shadowing her every move, Izzy's head is spinning.

In the little town of Walton, Georgia, everybody knows your name - but no one knows your secret. At least that's what Lane Kent is counting on when she returns to her hometown with her five-year-old son. Dangerously depressed after the death of her husband, Lane is looking for hope. What she finds instead is a dead body. Lane must work with Walton's newest deputy, Charlie Lynch, to uncover the truth behind the murder. But when that truth hits too close to home, she'll have to decide if saving the life of another is worth the cost of revealing her darkest secret.

It's been 18 years since TV crime reporter Andi Hollister's sister was murdered. The confessed killer is behind bars, and the execution date is looming. But when a letter surfaces stating that the condemned killer didn't actually do it, Detective Will Kincaide of the Memphis Cold Case Unit will stop at nothing to help Andi get to the bottom of it. After all, this case is personal: The person who confessed to the crime is Will's cousin.

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.

Fifteen years after a serial killer tormented them, Addie and Jacob are living very different lives. As an FBI Profiler, Addie is on the edge of burnout. When she returns home, she has to face down every nightmare she's ever had. Is the resurgence of a series of all too familiar deadly crimes the work of a former ally, or a mastermind who has been pulling her strings all along?

Evie Blackwell loves her life as an Illinois state police detective...mostly. She's very skilled at investigations and has steadily moved up through the ranks. She would like to find Mr. Right, but she has a hard time imagining how marriage could work, considering the demands of her job.

Psychology professor and criminal profiler Taylor Martin prides herself on being able to solve any crime except the one she wants most desperately to solve - the disappearance of her father 20 years ago. When she finally has a lead on his whereabouts, Taylor returns home to Logan Point, Mississippi, to investigate. But as she works to uncover the truth, someone else will do almost anything to keep her from it.

Having rescued Cassidy McKnight from kidnappers in South America, Gabe Sinclair thought his job was done. Not that the former Navy SEAL could ever forget the brave, beautiful single mother. But when the danger followed her home, Gabe promised to protect her. Why anyone would want to kill Cassidy was a mystery. Was the motive related to the orphaned toddler Cassidy was raising, a sweet little girl who brought out the father figure in maverick Gabe?

When her aunt dies in a mysterious plane crash, Professor Bailey Craig returns to Yancey, Alaska. She soon learns that her expertise is desperately needed in the investigation of a string of local murders—so she works with her ex, Cole McKenna, to ferret out the truth. As they become reacquainted, old feelings rekindle—but do Bailey and Cole have a future together?

Tara Parrish is the only person ever to survive an attack by the Lone Wolf bomber. Scared and emotionally scarred by her near death, she goes into hiding with only one plan - to stay alive for another day. She knows he's coming after her, and if he finds her, he will finish what he started. Agent Cal Riggins has had only one goal for the past six months - to save lives by ending the Lone Wolf's bombing spree. To succeed, he needs the help of Tara Parrish, the one person who can lead them to the bomber.

Summer Abernathy wakes up one morning to find her husband missing, three men in her home intent on finding him, and the life she's been living based on a lie. Which Kyle Abernathy did she marry? The computer programmer she met in line at the bank? Or the one who was apparently using that image as a cover story? The search for her husband - and answers - takes Summer ever deeper into a world of organized crime, where people are used one moment and discarded the next.