The Arsenic Labyrinth

A Lake District mystery. The return of Guy, a local drifter with a talent for deception, to Coniston, sparks new interest in the disappearance of Emma Bestwick, causing DCI Hannah Scarlett to reopen the old investigation, a case that leads her to the Arsenic Labyrinth, stone tunnels used to remove arsenic from tin ore, and to local historian Daniel Kind, who may hold the key to untangling old secrets.