21:15Sherlock HolmesThe Adventures of Sherlock HolmesEpisode 4: The Boscombe Valley MysteryBBC Radio 4 Extra Duration: 45 minutes Thu 21st Aug 2008, 21:15 on BBC Radio 7When a man is murdered, his blood-covered son stands accused. But the detective has his own theory. Stars Clive Merrison.GenresDramaCrimeBrandSherlock HolmesSeriesSherlock Holmes: The Adventures of Sherlock Holmes Source: BBC Online