Appaloosa by Robert B. Parker

Two hard-bitten lawmen are hired to bring order to a violent frontier town and, through iron discipline and carefully meted violence, impose a fragile peace. Told by one partner, the narrative follows their deepening bonds and test of loyalties when a powerful rancher refuses to submit, leading to escalating confrontations, betrayals and a climactic showdown that forces wrenching choices about justice, honor and the cost of maintaining law in a brutal landscape.

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