Edinburgh, 1849. Hordes of patients are dying across the city, with doctors finding their remedies powerless. And a whispering campaign seeks to paint Dr James Simpson, pioneer of medical chloroform, as a murderer. Determined to clear Simpson's name, his protégé Will and former housemaid Sarah must plunge into Edinburgh's deadliest streets and find out who or what is behind the deaths. The sequel to "The Way of All Flesh" - for fans of C.J.Sansom.