London, 1929. In the darkness before dawn, a railway porter, unloading a special train from Yorkshire, discovers a man's body, shot and placed in a sack. There are no means of identification to be found and as Scotland Yard hits a dead end, they call on the inimitable Kate Shackleton, a local sleuth, confident her local knowledge and investigative skills will produce results. But it's no easy task. Kate finds herself in a den of vipers. The killer is still at large. Not only that, but Scotland Yard has turned their back on her. As Kate edges toward the shocking truth, she's going to need all the strength and resourcefulness she can muster to uncover this sinister web of deceit.