The accidental sleuth

Emma Winberry is a senior sleuth with a sixth sense who talks to her Guardian Angel. This is the second book in the series. In this story she becomes involved with an anorexic teenager and her abusive uncle, two thugs who think she is someone else, and a group of homeless people. She believes thieves are looking for something that may be tied to a murdered inventor found in an alley. Can she figure out the puzzle before someone else is killed?