The Girl in the Green Raincoat: Laura Lippman

This was a cutesy short novel geared toward older readers I think. It didn't really hold my interest, but it was a short enough read that I finished. A woman is on bed rest and sees the same lady in a green raincoat daily walking her dog. When one day the dog is out by itself she becomes a detective to determine what happened to the woman, who ended up being a murderer.