She gently opens the woman's tightly clenched fist, uncurling each finger to reveal a square of folded paper hidden in her palm. Scrawled in thick crayon, beside a child's crooked drawing of a red flower, is one word that sends a shiver through the evening mist: HELP

It was supposed to be a routine road accident recovery, but the moment Detective Josie Quinn sees the passenger—pale and painfully thin, a sharp tool lodged in her stomach—it's clear she was the victim of something far more sinister, and likely dead before the crash. Watching the driver taken away in an ambulance, questions spin through Josie's mind. Where were these two women going? Was the driver trying to save a life, or hide a body? And—most heartbreaking of all—is there a child in danger, crying out for help with no reply?

Josie quickly identifies the crash survivor as Mira Summers, a singleton and animal-lover on her way home from nearby stables. Mira swears she doesn't know who the woman in the car beside her is, or how she was injured. And when she's diagnosed with concussion and memory loss, Josie is forced to back down.

But the discovery of Mira's prints on the child's drawing is all the proof Josie needs that Mira knows more than she's letting on, and a witness saw Mira meeting with a man with a gnarled diamond-shaped tattoo at the stables. In a race against the clock to track down this elusive man, Josie faces danger from the most unexpected places. Pushed to her limit, can she stay alive long enough to catch the killer and save the life of an innocent child?

Her heart stutters as she draws closer. A woman's fingertips curl over the boat's edge. Dark crimson blood clashes with the faded blue peeling paint beneath. They're too late, the beautiful woman within has been dead for some time…

Detective Josie Quinn lifts the baby from the pram, holding her close and gently soothing her. Josie scours the scene for the sweet little girl's mother, but the park is deserted. Glancing down, something catches her eye. Nestled amongst the child's soft pink blankets is a polaroid photo, the corner smudged with blood.

The search for Cleo Tate has Josie and her team in a chokehold; the abandoned newborn needs her mother, and every second counts now lab results show the blood belongs to her. The blurred photo of a body of water is Josie's only lead. But what does it mean? And where was it taken? The answer is just within reach, but with Cleo's husband lying about his movements that day, Josie can't see it. Then it finally clicks: Cold Heart Creek, a crime scene from Josie's past that she will never forget. Josie is terrified by what she finds there: Cleo's body, cold as ice, with a second photo of a new location.

A twisted killer is playing a devilish game. And when Josie finds a second innocent victim at the site of a different case she solved, she begins to suspect that she herself is at the very heart of it. But why? As more bodies and more photos follow, Josie must dig deep into the secrets and mistakes of her past to get one step ahead.

The link between these women is key to cracking the case. Someone wants revenge, and won't stop until their story is told, and no one involved is left breathing. Can Josie stop them before any more precious lives are taken? And just what will it cost her?