Heavy rain pours on the small town of Denton causing the riverbanks to break and the body of a young girl to float quietly to the surface. With no crime scene to examine, the odds are against Detective Josie Quinn and her team. Mercifully, the victim’s body is perfectly preserved, right down to the baseball patch on the jacket she is wearing. Josie can’t hide her devastation - her dead ex-husband, Ray, owned one just like it.  

On her first day back with the Denton PD after a major trauma, Detective Josie Quinn is on the hunt for a missing woman, Krystal Duncan, the mother of one of five children killed in a devastating school bus crash. Hours later, Josie finds Krystal’s body beside her daughter’s grave, her lips sealed together forever with wax.

A knock on the door late in the evening can only mean trouble for Detective Josie Quinn, but fear chokes her at the news that one of her own team is missing. No one has seen Denton PD’s Press Liaison Amber for days and, as she follows the message scrawled on the frosted windscreen of Amber’s car to a nearby dam, Josie hears a piercing scream that tells her she’s too late. But the body they pull from the freezing water is not Amber....

Detective Josie Quinn hasn’t heard from her sister since Trinity stormed out of the house in the heat of an argument three weeks ago. So, when human remains are found at the remote hunting cabin where Trinity was last seen, Josie can only assume the worst. Gathering her team, Josie feels a surge of relief when the dental records match a different body - that of a missing single mother from a neighboring town. But now Josie’s is not the only broken family desperate for answers.

When 12-year-old Holly Mitchell’s fragile little body is found on the steps of a mountainside church in the small town of Denton, a doll made from pine cones clasped tightly to her chest, Detective Josie Quinn rushes to attend the scene. She knows this little girl’s angelic face; her mother had offered Josie help when she’d needed it most. Searching the girl’s house, Josie is devastated to find that Holly’s mother is dead, too, and her little sister is missing. 

When seven-year-old Lucy Ross is snatched from the carousel in Denton city park, Detective Josie Quinn joins the frantic search. She’s the one who finds Lucy’s sparkly butterfly backpack abandoned by the ticket booth, a note with a devastating message stuffed inside: Answer your phone, or your sweet little darling will die.... The next day, Lucy’s parents are filled with hope when they pick up a call which they think is from their babysitter - but instead it’s a chilling male voice on the line.

Watching her friend dragged away in handcuffs, Josie couldn't believe for one second that Gretchen had killed that poor boy. Confession or not, someone else was involved. She would find out who... When the body of a young student is found on the driveway of a local Denton home, a photograph pinned to his collar, Detective Josie Quinn is first on the scene. The house belongs to Gretchen Palmer, a dedicated member of Josie’s team, missing for the last 24 hours. Working around the clock, Josie is stopped in her tracks when Gretchen hands herself in to the police. 

Detective Josie Quinn is horrified when she’s called to the house of a mother who had her newborn baby snatched from her arms. A woman caught fleeing the scene is Josie’s only lead, but when questioned it seems this mysterious girl doesn’t know who she is, where she’s from, or why she is so terrified.... Is she a witness, a suspect, or the next victim? As Josie digs deeper, a letter about a mix-up at a fertility clinic links the nameless girl and the missing child to a spate of killings across the county.

Arriving with her partner Noah for dinner at his family’s immaculate countryside home, Detective Josie Quinn is devastated to find Noah’s mother, Colette, lying lifeless in the back garden, her mouth clogged with soil. Searching the house for answers, Josie’s team don’t know what to make of the rosary beads buried in the dirt near the body or the hidden file labelled “Drew Pratt”, the small town of Denton’s most famous missing person.

When two young boys discover human bones buried beneath a tree in a trailer park, Detective Josie Quinn races to join her team at the scene. She used to play in those woods as a child, happier outside and away from her abusive mother, Belinda Rose. Josie’s past crashes into her present when a rare dental condition confirms the bones belong to a teenage foster-child who was murdered 30 years ago. A girl named Belinda Rose.

FBI analyst Kassidy Bishop is assigned to the "'For You' Killer" task force after a series of sadistic murders bearing the same signature arise in different parts of the country. The homicides are both calculated and savage, occurring in different states, but bearing the same signature: the words "for you" scribbled at each crime scene. The case chills Kassidy, bringing back memories of her own encounter with a violent criminal five years earlier.

In spite of a harrowing past still haunting her, Gwen Proctor is trying to move forward. Until a new assignment gives her purpose: the cold-case disappearance of a young man in Tennessee. Three years missing, no clues. Just Ruth Landry, a tortured mother in limbo. Gwen understands what it’s like to worry about your children. Gwen’s investigation unearths new suspects…and victims. As she follows each sinister lead, the implications of the mystery grow more disturbing. Because the closer Gwen gets, the closer she is to a threat that looms back home.

In the lonely woods around Grizzly Falls, Montana, the first body is discovered, stripped naked and tied to a tree. Alvarez and Pescoli have been hoping for a career-making case, but this is a nightmare. The killer stages car accidents on icy, isolated roads and “rescues” his victims. He toys with them, heals them, earns their trust...before subjecting them to a slow, agonizing death. 

Frankie Elkin is an average middle-aged woman, a recovering alcoholic with more regrets than belongings. But she spends her life doing what no one else will - searching for missing people the world has stopped looking for. When the police have given up, when the public no longer remembers, when the media has never paid attention, Frankie starts looking. A new case brings her to Mattapan, a Boston neighborhood with a rough reputation. She is searching for Angelique Badeau, a Haitian teenager who vanished from her high school months earlier. 

Some places earn their bad reputation through tall tales or chance. Grizzly Falls is different. Here, killers aren't just the stuff of legends and campfire lore. Someone is in the nighttime shadows, watching the local teens play around in the moonlit woods. Waiting for the right moment, the right victim. Waiting to take away a life. Detective Regan Pescoli is counting the days until her maternity leave. Exhausted and emotional, the last thing she needs is another suspected serial killer.