"A plague hangs over your yards" is an exciting detective story written by the famous British writer Michael Lewis. This book unfolds the events of a series of mysterious murders in medieval London. The main character, doctor and detective Roger Stateby, has to solve this mystery, distinguishing the truth from the intricate intrigues. The reader will discover the mysterious connections between crime, politics and medicine of that time, and the author's skill helps to feel the atmosphere of medieval London, its smells and colors. "The plague hangs in your yards" not only captivates with the plot, but also leaves the reader thinking about the eternal questions of morality and justice.