On Amazon US, from Oceanview Publishing:
EDIT: NOT FREE, $2.99 - sorry for any confusion
Collateral Damage: A Matt Royal Mystery by H. Terrell Griffin
From Booklist
Matt Royal, a fiftysomething retired lawyer living in Florida, jumps in with both feet when an old army buddy (they served together in Vietnam) asks him to find out who murdered his son. But what do the apparently unrelated deaths of some people on board a cruise boat have to do with the case? Not to mention another murder, way off in North Dakota. Matt is an easygoing narrator; he tries to keep his lifestyle laid back, to match that of the Florida beach community where he lives, but it’s tricky when his old instincts kick in, and he’s back in crime-solving mode. Comparisons to John D. MacDonald’s Travis McGee novels are natural, but it’s worth noting that the Matt Royal novels also fit comfortably on the shelf among the thrillers of Lescroart, Margolin, and Grippando. --David Pitt