I haven't read it yet, but I picked it up because is was non-mythos and because it has rules for psychics and mediums. From what I am told the book leverages New England superstition with the bad guys being vampires, ghost and witches (if I remember right). Note it takes place from 1929-1939 though I have ben told it could be easily moved to earlier in the twenties. I couldn't find any in-depth reviews but there is a mini review at https://orava.org/orava/weblog/2010/08/19/minireview-coming-full-circle-call-of-cthulhu
There is also Bumps in the Night (also from Pagan). I just found a review of it and like Coming Full Circle its non-mythos. See http://rlyehreviews.blogspot.com/2013/02/cthulhu-without-cthulhu.html