Die A Stranger (Alex McKnight) by Steve Hamilton

This is one of the best Steve Hamilton novels. When his Native American friend Vinnie Leblanc is missing ex-cop and sometime PI Alex McKnight investigates. He is helped by Vinnie's dad, a dangerous ex-con and gets involved in a war between potsmugglers.
The pacing in this one is just excellent, a real page-turner. There's a bit of mystery, some violence, great descriptions of the surroundings and great insights into the character of Alex McKnight, one of the most believable tough guys in fiction.
I loved the ominous ending, making me anxious to read the next in this excellent series.