We are excited to announce the signing of J.M. Simpson, celebrated author of The Castleby Series and The Whistlers Peak Series, for her first stand-alone title with Cahill Davis Publishing. Mine to Keep will be released on 8 May 2026 and promises to be one of the most thought-provoking psychological thrillers of the year.

Breaking away from the worlds of Castleby and Whistlers Peak, Simpson delivers a tense, emotionally charged narrative that shines a light on two rarely addressed but disturbingly common issues: domestic abuse against men perpetrated by women, and teenage stalking of teachers. Both themes challenge societal assumptions and confront the uncomfortable silences that often surround them.

In Mine to Keep, readers will be drawn into a gripping exploration of power, control, and obsession. With her signature blend of tight plotting, compelling characters, and emotional depth, Simpson tackles taboos head-on, delivering a story that will resonate long after the final page.

“I am absolutely thrilled to get this book out into the world and to be working with Cahill Davis Publishing, on the first of a few standalone novels.” said Simpson of the signing.

Some secrets are deadly. Some obsessions can be fatal.

Jed Thomas has worked hard to rebuild his life after the tragic loss of his fiancée. Now remarried, he enjoys a respected job as a PE teacher, loyal friends, and has what looks like the perfect life.

But behind closed doors, Jed is hiding a painful secret. Just as he begins to contemplate a way out, a new danger emerges.

A fifteen-year-old pupil has become fixated on him—her behaviour crossing lines that can’t be uncrossed. When Jed reports her actions, no one believes him. Then, on a friend’s stag night, things spiral out of control.

Jed finds himself accused of a crime he didn’t commit. Betrayed by someone he once trusted, he’s arrested and publicly disgraced. His reputation is shattered. He’s alone, discredited and running out of options.

But the worst is yet to come. As lives unravel and truths come to light, Jed is forced to confront just how far obsession, betrayal, and revenge can go. His world is about to implode… and not everyone will survive the fallout.

Cassandra, founder of Cahill Davis Publishing said: “J.M. Simpson is known for creating gripping, thrillers, and Mine to Keep is no exception. This is a brave, confronting, and unforgettable novel. We’re honoured to publish it.”

Mine to Keep will be available in paperback and eBook formats from 8 May 2026.