Truly, I must have been expecting something more like Angus, Lost, in which one never really worries. I wouldn't recommend it to anyone who tends to worry, whether adult or child. I was rather too anxious about Slipper to really enjoy the story or the art. Anxious enough that I didn't offer it to either of the kids, because beloved-cat-in-peril is the sort of thing to make all of us worry.
Library book.