Will delight adults or sophisticated 10-year-olds who aren't bothered by slightly old-fashioned language or setting (the book is set in London of the early 1900s).
The book is about cats, friendship, cats, honour, cats, responsibility, life and death and CATS! These aren't cartoonish "Hello Kitty" creatures either, but real cats living, fighting and explaining to one small boy why they do the things they do.
It's a wonderful book, involving and challenging for younger readers and touching and bittersweet for older ones. There's also terrors a-plenty and general excitement in life as seen from a cat's-eye point of view.
Get it, read it, love it and buy a copy for someone else!