Deadwood meets The Lord of the Rings in this Epic Fantasy of the West! Hungry darkness, haunted guns, tunnels that move like snakes—the crystal mines of Medicine Rocks, Montana are a place only the bravest and greediest dare. Discovered in 1866, the miraculous rock known as crystal quickly rose to become the most expensive substance on the planet, driving thousands to break the treaties and invade the sacred buffalo lands of the Sioux. But mining crystal risks more than an arrow in the chest. The beautiful rock has a voice of its own. A voice that twists minds and calls unnatural powers. A voice that turns men into monsters. Mary Good Crow hears it. Half white, half Lakota, rejected by both, she’s forged a new life guiding would-be miners through the treacherous caves. To her ears, the crystal sings a beautiful song, one the men she guides would gladly burn her as a witch for hearing. So, when an heiress from Boston arrives with a proposition that could change her life, Mary agrees to push deeper into the caves than she’s ever dared. But there are secrets buried in the Deep Caves that even Mary doesn’t know. The farther she goes, the closer she gets to the voice that’s been calling her all this time. A voice that could change the bloody story of the West, or destroy it all.

Magic in the Great Sioux War! When Mary Good Crow came out of the crystal into the arms of her sister, the last thing she wanted was another fight. But war is coming to the Great Plains. With crystal on their side, the Lakota are poised to annihilate the town of Medicine Rocks, forcing Mary to choose between the friends she’s found and the family she’s always longed for. When Rel Reiner accepted her father’s dark bargain to save Josie and the others, the last thing she expected was to survive. But there’s more to the Reiner’s magic than ghosts and bones. Magic Rel will have to embrace if she ever wants to walk in her own skin again. When Josie Price left the crystal mines one step ahead of death, the last thing she intended to do was quit. But the wolves in town are circling, and with the crystal going crazy and the cavalry riding to war, just finding a way to protect her people might cost her everything she came to Montana to build. Three women divided by a war none of them wants. But Josie, Mary, and Rel have always been strongest together, and with the world’s magical future on the line, “together” might be the only way anyone survives.