In my world there are two good things about Halloween: candy pumpkins and this book.
Would I recommend it? Yes, even crazy people who loath candy pumpkins have been known to enjoy this sort of ghost story.
You can read a more through review on this book that I wrote three(!) years ago here: Zen Ghost by Jon J. Muth
I still hate Clifford and I still hate Halloween but three years later we all still love this book!