Cold Pursuit by T. Jefferson Parker

Parker, whose Silent Joe won an Edgar in 2001, can turn his hand to many genres: this one is a thriller with elements of family feud, and with a setting-San Diego in an unusually rainy winter-that is wonderfully moody. Homicide cop Tom McMichael is called in on the murder of wealthy old Pete Braga, a legendary local character who was once a tuna fisherman and now moves in the city's top financial circles. The problem is that his Portuguese family and McMichael's Irish one have a rivalry going back two generations. The details of that past, and the picture that emerges of two feisty old men locked into a bitter battle, are the brightest part of the book.