Meet Scott Cullen, a detective working in Edinburgh's murder squad. Young and headstrong but determined to do what's right, he’s given a case that hits close to home…

Think you're safe online? Think again.

DC Scott Cullen of Lothian and Borders CID has only been in the job three months. Young, eager to please and desperate to do good. So a missing persons case should be an easy case to solve. Right?

Fresh from a messy divorce, Caroline Adamson’s future is finally looking up. Her son seems happy and she’s dating again. Trouble is, Cullen can’t find Caroline or the man she met on Schoolbook, the latest social network taking Edinburgh by storm.

When Caroline’s mutilated body is found, Edinburgh faces the reality of a serial killer hunting young women. The discovery of a second, connected victim leads DI Brian Bain to put Caroline’s ex-husband in the frame. Cullen isn’t so sure and is determined that the right person faces justice. As things take a personal turn, Cullen must look closer to home for the answer — before it’s too late.

A gritty, gripping and wholly satisfying modern crime novel, Ghost in the Machine asks if we’re ever safe online, and how do we know who to trust? For fans of Ian Rankin, Stuart McBride, Alex Smith and JD Kirk, Ghost in the Machine is the novel that introduced readers to ambitious maverick Detective Scott Cullen, whose series has set the bestseller charts alight.

Binge the bestselling series now:

1. GHOST IN THE MACHINE
2. DEVIL IN THE DETAIL
3. FIRE IN THE BLOOD
4. STAB IN THE DARK
5. COPS AND ROBBERS
6. LIARS AND THIEVES
7. COWBOYS AND INDIANS
8. HEROES AND VILLAINS

And continue it in the Cullen & Bain series:

1. CITY OF THE DEAD
2. WORLD’S END
3. HELL’S KITCHEN
4. GORE GLEN
5. DEAD IN THE WATER
6. THE LAST DROP