Sherlock HolmesThe Adventures of Sherlock HolmesEpisode 9: The Engineer's ThumbBBC Radio 4 Extra Duration: 45 minutesFirst broadcast: Mon 1st Sep 2008, 10:15 on BBC Radio 7Latest broadcast: Thu 10th Mar 2016, 21:15 on BBC Radio 4 ExtraA young man with severe injuries and a chilling tale arrives at Watson's surgery. Stars Clive Merrison and Michael Williams.GenresDramaCrimeBrandSherlock HolmesSeriesSherlock Holmes: The Adventures of Sherlock Holmes Source: BBC Online