No Country For Old Men by Cormac McCarthy

1980.

Llewelyn Moss, a Vietnam veteran, is hunting antelope near the Rio Grande when he stumbles upon a transaction gone horribly wrong. Finding bullet-ridden bodies, several kilos of heroin, and a caseload of cash, he faces a choice – leave the scene as he found it, or cut the money and run. Choosing the latter, he knows, will change everything.

And so begins a terrifying chain of events, in which each participant seems determined to answer the question that one asks another: how does a man decide in what order to abandon his life?