New York: St Martin's. (1987) dj. Hardcover first edition - The sixth and final case featuring Inspector Brunt, published posthumously. Slickensides is the name of a farm in the High Peak district of Derbyshire, of a cheese prepared at the farm, and of the old lead mine that lies beneath it. In 1911 Brunt is sent there to investigate a reported break-in at the farm; at the same time a private detective who pretends he is Sherlock Holmes arrives at the local inn, to investigate the alleged disappearance of Barnard Brittlebank, the squire's dissolute son. When young Brittlebank's body is found in the Slickensides mine, a dense fog descends, cutting off all communication with the outside world, and Brunt is left to answer some tricky questions with no assistance beyond the evidence and that of his own sharp wits. 164 pp. ISBN: 0-312010915.