Laughter intrigue and suspense are evoked in equal measure by this fastpaced dramatisation of the classic Sherlock Holmes mystery. Originally scripted for openair performance in the promenade style the action kicks off with an amusing rustic Victorian melodrama but thereafter it is the brooding presence of Dartmoor which lies at its dark centre. Over the purple heather the granite tors and the sucking bog of Grimpen Mire comes a parade of colourful characters to confuse and disturb the courage