The Valley of Fear, the last of four complete Sherlock Holmes novels written by Doyle, offers readers two distinct plot lines, loosely connected and filled with classic Holmes themes, even reintroducing Holmes' arch-villain Moriarty at one point. In the first plot, Jack Douglas is found dead of a shotgun blast at Birlstone manor, something Holmes had been warned about ahead of time in a coded letter that had been sent to him. In the second storyline, a secret society of coal miners welcomes Jack McMurdo as a new member, not knowing his true background. Neither the society nor McMurdo are prepared for the series of events that would unfold as community injustices are righted by the secret group, led by Boss McGinty. Are they truly above the law? Only time will tell in The Valley of Fear.