I am violating my own rule here. My rule is I don't review books by people I know well enough to hug.
I know Mary Hahn well enough to hug, and to kiss on the cheek. Both of which things I did last time I saw her, the day after I finished reading this book. I think you would, too.
Mary's an old friend of my parents - I think her first husband and my dad went to college together? Maybe mom was a bridesmaid? She and my mother were pregnant with their first children at the same time, and compared notes. Some time after those girls (one of them me) were born, she and my parents more or less lost touch.
Mary started working as a school librarian, and in the mid-1970's started writing novels for children. Mysteries. Ghost stories. And though most of these stories stay well within the range of "comfortably spooky" - excellent choices for middle-grade readers who crave just enough chill to keep them turning pages, but not enough to keep them up at night - that's still thirty-some years' worth of haunted houses and restless spirits, guilt, revenge, and loss.
And now we know why.