Detective Kate Snow is fighting for her life.

Rushed to hospital under urgent circumstances and suspected of arsenic poisoning, she becomes the latest casualty in a case that has spiralled far beyond control. At her bedside stands Detective Ally Emerson-partner, protector, and the one person refusing to let her slip away.

What began with the discovery of a jawbone on the shore of Barrowmere Lake has unravelled into a decades-old nightmare.

Jane Peterson, missing for eleven years, has finally been found-her remains scattered between the frozen lakeside and the surrounding forest. Buried nearby lay Neil Perkins, the man she was having an affair with, his body preserved by lethal levels of arsenic. But Jane and Neil are only the beginning.

Jane's sister died under suspicious circumstances. John Peterson's subsequent lover vanished without trace. And now, with Snow poisoned and Peterson himself missing, the investigation takes on a terrifying urgency.

Is John Peterson a grieving husband...or a calculated killer who has evaded justice for over a decade?

As Snow battles the lingering effects of the toxin, Emerson is forced to confront her own fragile state. Haunted by past trauma and pushed to the edge, she must hold herself together long enough to track down a man who may have been hiding in plain sight all along.

With time running out and the body count rising, Emerson and Snow face their most dangerous case yet-one that threatens not only their careers, but their lives.

Find out what happens in...Emerson's Way.