The Valley of Death — Michael D. George

Two years of hunting the killers of his wife and child bring Bob Cooper to the heart of the Mexican prairie, and now he's on the brink of death. Seemingly from nowhere, a small band of vaqueros - led by the elegant Juan Cortez - appear on the scene and rescue him. Using his knowledge of the land, Cortez joins Cooper on his relentless quest for the murderers. Finally, the trail leads to The Valley of Death - and to bloody violence and awesome revenge.