In the summer of 1995, Amish sisters Iva and Elizabeth Vault hitched their horse to the family's delivery wagon and vanished from their secluded California valley. For 9 years, the accepted story was that they had simply run away, seduced by the forbidden freedoms of the modern world. But in 2004, when state environmental workers were inspecting abandoned mine shafts in the remote foothills, they found something that silenced the whispers forever. Wedged deep in the earth, far below the surface,