’It is the Valley of Fear, the Valley of Death. The terror is in the hearts of the people from the dusk to the dawn. Wait, young man, and you will learn for yourself’. Sherlock Holmes is intrigued and disturbed when he receives an ominous coded message: a Mr Douglas of Birlstone House is in terrible danger.
The first message sent to Tom Thorne's phone was just a picture - the blurred image of a man's face, but Thorne had seen enough dead bodies to know that the man was no longer alive. But who was he? Who sent the photograph? And why? While the technical experts attempt to trace the sender, Thorne searches the bulletins for a reported death that matches the photograph. Then another picture arrives.