When Harold Monkhouse died in his sleep no one was greatly surprised. He had suffered chronic illness for some time. But when massive amounts of arsenic were discovered at the autopsy, it was clearly a case of murder. The police had a number of suspects and plenty of clues, all of which led-nowhere. That was when Dr. John Thorndyke, the noted forensic expert was called in. But could even Thorndyke, with his vast knowledge and experience, discover the murderer with the evidence dispersed and the trail gone cold. Follow the famed Edwardian medical sleuth as he tracks the culprit who came ...As a Thief in the Night!