Even reading isn't fun

I just finished "Roadside Crosses" by Jeffrey Deaver. He's famous for his books about Lincoln Rhyme's and does an excellent job. This is a new sequel about a CBI named Kathryn Dance. We first met her in a Rhyme's novel as a kinesics (body language) specialist. This is the third book about her and it just isn't as good as his regular sequel. I kept reading it because it was okay but it just didn't come up to par with what I'm used to from Deaver. I know my mood is down but I should still enjoy a good book.