'A masterclass in thrillers' Reader Review, ⭐⭐⭐⭐⭐

'One hell of a treat' Reader Review, ⭐⭐⭐⭐⭐

'Blown away, almost literally' Reader Review, ⭐⭐⭐⭐⭐

'Wow, wow, wow!!' Reader Review, ⭐⭐⭐⭐⭐

'Proper edge-of-your-seat stuff' Reader Review, ⭐⭐⭐⭐⭐

Alex and Pip are in desperate need of an escape. Their stressful roles as hostage negotiators are eased only by the fact that they get to come home to each other every night.

When an old friend invites the couple up to the Scottish Highlands for an extended break, Alex and Pip jump at the chance. It's the rest they both need.

But soon after they arrive at the castle, they hear the sound of gunshots, and their perfect escape turns into a perfect nightmare. The remote mountainous landscape is now the setting for a terrifying kidnap plot targeting one of the other guests.

In the desperate hours that follow, Alex and Pip must call on all their years of negotiating experience to keep everyone alive. But with Pip gravely injured and the net closing in, it might be her life that needs saving most of all...

Read what everyone is saying about The Castle:

'Wow wow wow!!... This was a fantastic read! This book had great suspense, murder, mystery, fantastic characters, revenge... wild twists and turns! The storyline was very interesting! I highly recommend reading this book.' Reader Review, ⭐⭐⭐⭐⭐

'This is proper edge-of-your-seat stuff and moves at a blistering pace... A very tense read... Mr Sutherland is going to be someone that stays on my radar. Loved this!' Reader Review, ⭐⭐⭐⭐⭐

'I will admit to crying at one point, you'll know when you get there, and my emotions played yoyo for a while which was fabulous! Highly recommended... a tense and rewarding thriller that we've chosen as both a LoveReading Star Book, and Liz Pick of the Month.' LoveReading, ⭐⭐⭐⭐⭐

'A masterclass in thrillers... So tense I found myself reading aggressively! I had to know what happened and I wanted more the second I had finished. Incredible.' Reader Review, ⭐⭐⭐⭐⭐