Another gentle tale of Northern homicide from the pen of E.C.R. Lorac, Fell Murder (1944) was Chief Inspector Robert Macdonald’s first visit to Lunesdale — I’m not entirely sure how many he would make over his career, but I understand it to be more than a few — and finds author and character both having a lovely time. This only falls down for me in comparison to the similarly-set Crook o’ Lune (1953) in that the eventual solution doesn’t feel quite so rigorously proved, relying on a few rather key assumptions which spoil the overall effect. Prior to that, however, Lorac’s melding of character and setting again shows through very strongly, making her popularity easy to understand.
My 
Given the number of people who applied themselves to the challenge of writing a novel of detection during the Golden Age (precise dates pending…), it is to be expected that a fair number of wonderful novels, plots, ideas, and authors will have been lost in the tidal wave of creativity. Through the continued efforts of publishers like Ramble House — who were reprinting this stuff before it was cool again — we’ve been able to rediscover 
The Invisible Event 