This is a cozy read. One woman loses her handbag in a snatch theft, and one man stumbles upon the abandoned bag in an alley. Inside, among a few other scant clues, (but nothing definitive as to identity) is a red notebook with jottings, with which he attempts to track down the owner, who is recovering from the mugging, at a local hospital. It reminded me a little of the movie 'While You Were Sleeping'. The treat for me is that the 'hero' is a bookseller -- and I have a soft spot for such a protagonist.