A Pale Horse

In the ruins of Yorkshire's Fountains Abbey lies the body of a man wrapped in a cloak, the face covered by a gas mask. Next to him is a book on alchemy, which belongs to the schoolmaster, a conscientious objector in the Great War. Who is this man, and is the investigation into his death being manipulated by a thirst for revenge?

Meanwhile, the British War Office is searching for a missing man of their own, someone whose war work was so secret that even Rutledge isn't told his real name or what he did.

The search takes Rutledge to Berkshire, where cottages once built to house lepers stand in the shadow of a great white horse cut into…