The Veil by Diane Noble

Amidst the majestic beauty of 1857 Utah, the members of one secluded religious group claim to want nothing more than to practice their beliefs without persecution. Yet among them are many who engage in secret vows, and brutal acts of atonement...all in the name of God. But one young woman, Hannah McClary, dares to question the truth behind the shroud. Soon Hannah and the young man she loves--Lucas Knight, who has been trained from childhood to kill on behalf of the Church--find themselves fighting for their lives. As a group of unwary pioneer families marches into Utah toward a tragic confrontation with the Saints at a place called Mountain Meadows. Hannah and Lucas are thrust into the most difficult conflict of all--a battle for truth and justice--even as they are learning for the first time about unconditional love, acceptance, and forgiveness.