The new squire takes up residence in his 18th century inheritance, but the witch hunting exploits of his ancestor come back to haunt the present.
One of M R James' oddest stories, because of the account of the creatures in the tree, and I think this adaptation captures that. The acting and pace are good, and the melding of periods is done subtly and without confusion (although I'm not sure about the reference to Kilkenny).
There is one amazing scene where the sky above the horizon seems to be awash with waves - I guess it was done in a field sloping down to the shore - and is a very striking trick on the eye, although it doesn't help the story much.
Overall - great style, ending in creepiness.