Cannon's Mouth (Rafferty) by W, Glenn Duncan

When Rafferty gets mistaken for a hitman. He tries to warn the intended victim but is too late. Then the chase for the real killer starts.
I'm a fan of this series, and the mood is always nice and breezy but this time the plot seemed a bit too thin. Also, while not a long book I had a feeling the story could be told in half the pages.
Still, if you like Spenser you will absolutely enjoy this fun and action-packed series. If you dislike this particular one, don't be discouraged, the other books are better.