When a letter from Salisbury reaches Baker Street one morning in 1887, its writer telling of his fears relating to a matter he will only discuss in person, Holmes is intrigued. Yet when that would-be client turns up dead less than a day before he was to have made the journey up to London, Holmes’ interest in the case becomes, in his words, “a matter of personal honour.” So begins A Slaying in Salisbury, the latest volume in The Continuing Chronicles of Sherlock Holmes, a murder mystery in which nearly everyone within an entire town not far from Stonehenge, could be regarded as potential suspects in an eccentric inventor’s distinctly unusual death.