The wranglers

The job was close to impossible--Gannon knew that even as he volunteered for it. The chances of his even getting out alive were not fat. As they reached Apache country, Gannon's surly Paiute guides grew edgy. Gannon thought of the Regan woman, ready and willing, and only fifty miles back. Then he thought of the kid, held by the Apaches somewhere up ahead in that broken desert waste. Gannon knew it was crazy to go on. But Gannon had made his promise. He went on. --Goodreads