By Carl Hiaasen.
Pretty quick, entertaining read. Roy sees a boy running barefoot down the street past the school bus stop one morning, and wonders who he is. Hijincks (sort of) ensue. Cute owls are involved. What else is there to say? It isn't blatant fantasy, unlike many of the books I read.
You'd probably enjoy it. It's kind of a Floridian slice-of-life story. (The author's bio says Hiaasen has been writing about Florida since he was 6 or 7 years old.)