In the dark woods of Olive Park, in the hills above Sacramento, a California Highway Patrol officer stumbles over a gnarled branch. But it isn’t a branch. It is an arm. Reaching up from a shallow grave. And clutched in the small, desperate hand is a single quarter. So begins one of the most exhaustive investigations in California history. Yet even with their massive resources, State and Federal authorities fail to find any trace of the killer. After two long years, the case goes cold.

Private Investigator Mallory Dimante has no time for a pro-bono cold case. Focused on developing the detective firm she’s building with her partner, Jake Steiner, she needs work that can keep them and their new Seattle houseboat afloat. But she can’t say no when she comes face-to-face with the victim of a devastating acid attack. 

A phone rings at 5:07 a.m. in a Seattle houseboat…but to a number that shouldn’t exist. A man, wire-bound to a kitchen chair, is discovered in the ruins of a burned-out house. A woman, sexually abused when she was a young girl, names a presidential candidate as her abuser...and a naïve landscape gardener, relentlessly pursued by hit men, holds the key to it all. What started as a straightforward missing person case for private investigators Mallory Dimante and Jake Steiner now has them racing to work out the connection between these events.

When Bobby McGowan discovers an old photo album belonging to his mother—who was murdered twenty years ago—he becomes convinced that one of the photos holds the key to finally solving her murder. Despite the protests of his father and sister, Bobby marches forward with the investigation. He builds a website dedicated to the murder of his mother, and receives a message from the purported killer. The game is on.

Thomas Austin was once a prominent NYPD detective, known for locking up a psychopathic serial killer dubbed "The Holiday Baby Butcher". Now retired in a small beach town in the Pacific Northwest, Austin runs a little café, trying to overcome the loss of his wife, a DA who was gunned down only one year ago.

After a highly decorated police officer is found brutally murdered in the ski resort town of High Peaks, the State Bureau of Criminal Investigation steps in. Upon hearing the news, homicide investigator Noah Sutherland returns to his hometown in the Adirondacks, believing his brother's death to be more than just a cold, methodical ambush.

Rumors have swirled around Jake Cashen his whole life. Is he crazy like his father? Is it true they booted him out of the F.B.I. right after he cracked a career-making RICO case? Was he dirty? Only Jake knows, and he’s not telling. He came back to his tiny hometown at the foot of Ohio’s Blackhand Hills to serve as a deputy sheriff. He hopes to punch a clock and keep his head down until retirement. It was a solid plan—until someone put a bullet in the head of a revered county judge.

I open the front door and there’s Amy, smiling sweetly and ready to help. She’s been a lifesaver since Jon and I moved here–from walking the dog to picking up my little son Teddy from nursery last minute. I’m so lucky we met in the playground the first day we arrived. Amy is more than just a good friend. My only friend, really. Whenever Amy and Jon exchange glances I’m sure it seems like they’ve met before, even though Jon swears they haven’t. But then again Jon recognises lots of people from his childhood round here without truly knowing them.

Quint Adler is a small town crime reporter with bigger aspirations. Stuck in a hospital bed on his 40th birthday, he overhears a conversation that arouses his suspicions. Sensing an opportunity, Quint starts his own investigation, bypassing local law enforcement in the process. His inquiries lead him to the scene of a savage murder. And then a second one, even more barbaric in nature.

Women are being found dead, contorted, and raped as the Pike Peaks Killer makes headlines. With Detective Frost's abilities doubted, and no new leads on the case, FBI Agent Jaxson Locke arrives uninvited to help with the investigation.

A lifeless girl slips into the river, cold and crumpled. Her body washes away with the rain. Her killer remains a mystery. Sheriff Elven Hallie has been longing for a new case that would add some excitement to his small-town life. But a dead girl wasn’t what he expected. On the last murder case he worked, he was just a deputy with an experienced Sheriff to guide him and they were looking for an outsider. This time, he’s in charge, and the killer is part of their community.

D.I. Duncan McAdam is dispatched home to the Misty Isle. A body has been found buried in a remote location on the Waternish peninsula. Well-preserved in the peat, Isla Matheson—missing for the better part of two decades—is revealed to a shocked island community. A teenage runaway is dead...and no one is talking.

One morning Gwen Thomas takes a short walk with her Siberian husky in the outskirts of the Welsh town she calls home. She is drawn to a desolate area where, some 20 years ago as a teenager, she was brutally attacked and her friend killed. Disorientated by a sudden rush of memories, she has a fall. Later, recovering in hospital, she begins to recollect the events that led up to her friend’s death.

New to the local police force, when a body is found on a secluded mountain trail Delaney is called to the scene. Surrounded by imposing pine trees, a young woman lies still in the moonlight. Gazing into her dark, unblinking eyes Delaney’s heart pounds wildly in her chest as she recognizes the victim. It’s her beloved sister-in-law: Kateena’s mother, Lila. But she died weeks before. Didn’t she?

My kid sister was murdered fifteen years ago. Now the killer has struck again. And this time, I’m going to take my revenge…