AMARILLO—Rick Treon’s thriller Let the Guilty Pay has been named a finalist for the 2021 Silver Falchion Award for Best Suspense Novel by literary organization Killer Nashville. “I am blown away by this nomination,” said Treon, an Amarillo resident and former editor of the Amarillo Globe-News. “A Silver Falchion is one of the top awards for authors in the mystery, suspense, and thriller genres…