5A stunning thriller and "a page-turning read" (Daily Mail) set in the trenches of World War I featuring beloved literary character and Sherlock Holmes's sidekick Dr. John Watson.

Deep in the trenches of Flanders Fields, men are dying by the thousands every day...so one more death shouldn't be a surprise.

But then a body turns up with bizarre injuries, and Sherlock Holmes's former sidekick Dr. John Watson finds his suspicions raised. The victim's jaw was clamped shut in a terrible rictus and facial expression suggested that the man had seen unimaginable horror. Something is terribly wrong.

But this is just the beginning. Soon more bodies appear, and Watson must discover who is the killer in the trenches. But who can he trust? Surrounded by unimaginable carnage, amidst a conflict that's ripping the world apart, Watson must step out of the shadows and into the limelight if he's to stop a brutal killer before he strikes again.