When Dr Huxtable (no, not that one) makes a desperate appeal to Sherlock for help in locating a missing pupil of his school, the great detective politely declines. When he learns of the £6000 reward, however, and the blue blood behind the case, Holmes does an about turn and hops on the next train north! A tale of murderous intrigue, ransom and bike tire forensics then ensues. Scott's choice for "Sherlock Selects" comes from December 2017 and closes out the retrospective Summer Series for another year.