Cain just Cain (Shad Cain Book 2);

Shadrac Cain had only three rules in his dealings with the rest of humanity. They were, “Don’t mess with those who can’t defend themselves… Don’t mess with any of my friends. I only have a few, and I’ll not have them troubled… And for the love of God, don’t mess with me… You break any of these rules and this planet won’t be big enough to hide you.”
The Dooly gang came out of Texas on a rampage, and they seemed hell bent on breaking every rule of man, nature, and Cain. The law and the elements could deal with the Doolys as they saw fit, and Cain would deal with them his way.