I've been stumbling across this book for years but have never actually read it. Now's my chance.

Jane-Emily by Patricia Clapp is said to be genuinely frightening and not for the faint-hearted. Excellent news.

Here's the first paragraph:

There are times when the midsummer sun strikes cold, and when the leaping flames of a hearthfire give no heat. Times when the chill within us comes not from fears we know, but from fears unknown - and forever unknowable...