There are two shows, consisting of two stories each. The first (and perhaps more suitable for younger folk) offers'Canon Alberic...' and 'The Mezzotint'. The second consists of 'Oh Whistle...' (of course) and 'The Ash-Tree'. Having seen both shows separately I can testify to their high entertainment value, and the fact that they are true to the spirit of M.R. James's original storytelling sessions with his trendy young friends.
Here's a clip from one of RLP's videos, as sold by Nunkie.