I purchase this book from a free site.  I really didn't expect much, you know how it is some of the free books are not worth it at all.  The classmate murders rocked me.  From the first chapter to the end I was completely involved with the characters and the story.  Love Jim Richards, being in the senior citizens class I could empathize with him and Penny ( I really envy her and her well kept figure).  The characterization was very perfect you could auctually picture each one.  I just bought the second in the series and I am looking forward to further antics and solving another murder.  Keep it up Bob.  You are now one of my favorite authors.