Sudden Troubleshooter — Frederick H. Christian

Lafe Gunnison had passed the word to the homesteaders â€" quit stealing cattle or take the consequences! Up in the Mesquites, the nesters reacted the only way they knew: they told Gunnison he was a liar and if he showed up in their neck of the woods he'd wind up with a tombstone over his head.
It was trouble â€" big trouble â€" all it needed was one small spark to start a war to the death. Only one man could stop it. One man â€" backed by his courage and the guns he wore. A man with a past, scouring the West for two killers â€" a man called â€" Sudden.