Author Helen Grant, whose story 'The Sea Change' appeared in ST in 2007, has an excellent article on M.R. James at her blog. Warning - not for arachnophobes. No way, no how.
If you aren't given the screaming abdabs by our leggy friends, a reminder that an excellent American dramatisation of 'The Ash-Tree' can be heard on my YouTube channel. Or indeed, right here below: