London, 1841. Newly returned from India, Jeremiah Blake and William Avery find life back in Victorian England difficult to settle into, having left a disconnected country travelled by pony and trap, and returned to one in the grip of railway mania. When a series of murders occur, all connected to the press, Avery and Blake find themselves back in action. But with connections between the murdered and those seeking revolution, it is a race against time to find the killer before he strikes again.