The Painter by Peter Heller
Heller's follow-up to The Dog Stars is much more of a character study. What makes an artist tic? How do we deal with grief? How do we control our anger, and what happens when it controls us? These questions are asked and explored when Jim Stegner, a reclusive painter with a violent streak, encounters a man beating a horse.
The novel has a slightly open ending and it works perfectly here. You know Jim Stegner so well that you know exactly what happens next.
Also lots of fly fishing. Recommended.
Geoff Jones is the author of the sci-fi thriller