The heat won't be the only thing that kills you.

Launching 25 July 2026

Eight guests enter The Thorne Spa. Six will leave alive.

In the heart of Harrogate, The Thorne Spa promises silence, luxury, and its famous Three Heat Journey. 

For Chloe Summers, it should be the perfect escape – even if spending the day with her immaculate, impossible mother already feels like punishment.

But Chloe is not the only guest hiding discomfort behind a robe and a polite smile.

A nervous man watches the exits.

A glamorous wife trembles beside her powerful husband.

A first date is not quite a first date.

And written on the spa walls is a promise that feels less soothing by the hour: Restore what the world has taken.

By the end of the day, two guests will be dead, every lie will start to surface, and Chloe will realise the most dangerous thing inside The Thorne Spa is not the heat.

It is the truth someone has killed to keep buried.

Harrogate made me do it

They took my phone away.

The idea for this book came during my visit last year to Harrogate and its beautiful Turkish Baths. Before the treatment began, I was asked to surrender my phone for two entire hours.

As a perfectly normal adult with a perfectly normal phone addiction, I was immediately terrified.

What was I supposed to do with all that uninterrupted time?

Apparently, the answer was to plan two murders.

Fictionally, of course.

By the time I left, the earliest pieces of The Harrogate Spa Murders had begun to form. Harrogate gave me the setting, the atmosphere and the inspiration. My slightly overactive imagination did the rest.

There was something irresistible about placing a psychological thriller inside a spa. It should be one of the safest, calmest places imaginable. Guests surrender their phones, change into identical robes and move together through a carefully controlled series of treatments.

They are expected to relax.

They are also cut off from the outside world.

And once I started thinking about that, the spa became the perfect place to trap a group of people who all had something to hide.