A serial killer watches and waits. Each time, he takes two victims, preparing the first's body with all the clues the police need to find the second, who is still alive. The clock ticks, and the second one can still be saved. But the police never make it in time. The second one dies. For years, the killer has plagued the city with the same pattern, but the police never pick up on it quickly enough.

What do you do when a killer targets the people you love the most? When he knows how to make them vulnerable? When he knows the same about you? These are the questions that haunt FBI Special Agent Pierce Quincy. The police say his daughter’s death was an accident. Quincy will risk everything to learn the truth — and there’s only one person willing to help. Ex-cop Rainie Connor had once been paired professionally — and personally — with the brilliant FBI profiler. He helped her through the darkest days of her life.

For ex-FBI profiler Pierce Quincy, it's the beginning of his worst nightmare: a car abandoned on a desolate stretch of Oregon highway, engine running, purse on the driver's seat. And his estranged wife, Rainie Conner, gone, leaving no clue to her fate.

For Kimberly Quincy, FBI Special Agent, it all starts with a pregnant hooker. The story Delilah Rose tells Kimberly about her johns is too horrifying to be true; but prostitutes are disappearing, one by one, with no explanation, and no one but Kimberly seems to care.

What would you do if the man of your dreams hides the soul of a killer? Jim Beckett was everything she'd ever dreamed of...But two years after Tess married the decorated cop and bore his child, she helped put him behind bars for savagely murdering ten women. Even locked up in a maximum security prison, he vowed he would come after her and make her pay. Now the cunning killer has escaped - and the most dangerous game of all begins....

Eight years ago, Sharlah May Nash's older brother beat their drunken father to death with a baseball bat in order to save both of their lives. Now thirteen years old, Sharlah has finally moved on. About to be adopted by retired FBI profiler Pierce Quincy, and his partner, Rainie Conner, Sharlah loves one thing best about her new family: they are all experts on monsters.

The last thing Boston Detective D. D. Warren remembers is walking the crime scene after dark. Then, a creaking floorboard, a low voice crooning in her ear… She is later told she managed to discharge her weapon three times. All she knows is that she is seriously injured, unable to move her left arm, unable to return to work. My sister is Shana Day, a notorious murderer who first killed at fourteen. Incarcerated for thirty years, she has now murdered more people while in prison than she did as a free woman.

Nicole Frank shouldn't have been able to survive the car accident, much less crawl up the steep ravine. Not in the dark, not in the rain, not with her injuries. But one thought allows her to defy the odds and flag down help: Vero.

The home of a family of five is now a crime scene: four of them savagely murdered, one - a sixteen-year-old girl - missing. Was she lucky to have escaped? Or is her absence evidence of something sinister? Detective D. D. Warren is on the case - but so is survivor-turned-avenger Flora Dane. Seeking different types of justice, they must make sense of the clues left behind by a young woman who, whether as victim or suspect, is silently pleading, Look for me.

Justin and Libby Denbe have the kind of life you’d find in the pages of a glossy magazine: A beautiful 14-year-old daughter. A gorgeous brownstone on a tree-lined street in Boston’s Back Bay neighborhood. A great marriage, admired by all. A perfect life. When investigator Tessa Leone arrives at the crime scene in the foyer of the Denbes’ home, she finds scuff marks on the floor and a million tiny pieces of bright green Taser confetti. The family appears to have been abducted.

It was a case that haunts Bobby Dodge to this day - the case that nearly killed him and changed his life forever. Now, in an underground chamber on the grounds of an abandoned Massachusetts mental hospital, the gruesome discovery of six mummified corpses resurrects his worst nightmare: the return of a killer he thought dead and buried.  

Timothy O’Day knew the woods. Yet when he disappeared on the first night of a bachelor party camping trip with his best friends in the world, he didn’t leave a trace. What he did leave behind were two heartbroken parents, a crew of guilt-ridden groomsmen, and a pile of clues that don’t add up. Frankie Elkin doesn’t know the woods, but she knows how to find people. So when she reads that Timothy’s father is organizing one last search, she heads to Wyoming. 

One question, a split-second decision, and Brian Darby lies dead on the kitchen floor. His wife, state police trooper Tessa Leoni, claims to have shot him in self-defense, and bears the bruises to back up her tale. For veteran detective D. D. Warren it should be an open-and-shut case. But where is their six-year-old daughter? As the homicide investigation ratchets into a frantic statewide search for a missing child, D. D. Warren must partner with former lover Bobby Dodge to break through the blue wall of police brotherhood, seeking to understand the inner workings of a trooper’s mind while also unearthing family secrets.

On a warm summer night in one of Boston’s working-class neighborhoods, an unthinkable crime has been committed: Four members of a family have been brutally murdered. The father - and possible suspect - now lies clinging to life in the ICU. Murder-suicide? Or something worse? Veteran police detective D. D. Warren is certain of only one thing: There’s more to this case than meets the eye. 

It was a case guaranteed to spark a media feeding frenzy: a young mother, blond and pretty, disappears without a trace from her South Boston home, leaving behind her four-year-old daughter as the only witness and her handsome, secretive husband as the prime suspect. But from the moment Detective Sergeant D. D. Warren arrives at the Joneses - a snug little bungalow, she senses something off about the picture of wholesome normality the couple worked so hard to create.