For a while, the residents of Manitoba Colony thought demons were raping the town's women. There was no other explanation. No way of explaining how a woman could wake up with blood and semen stains smeared across her sheets and no memory of the previous night. No way of explaining how another went to sleep clothed, only to wake up naked and covered by dirty fingerprints all over her body. No way to understand how another could dream of a man forcing himself onto her in a field—and then wake up the next morning with grass in her hair.

For Sara Guenter, the mystery was the rope. She would sometimes wake up in her bed with small pieces of it tied tightly to her wrists or ankles, the skin beneath an aching blue. Earlier this year, I visited Sara at her home, simple concrete painted to look like brick, in Manitoba Colony, Bolivia. Mennonites are similar to the Amish in their rejection of modernity and technology, and Manitoba Colony, like all ultraconservative Mennonite communities, is a collective attempt to retreat as far as possible from the nonbelieving world. A slight breeze of soy and sorghum came off the nearby fields as Sara told me how, in addition to the eerie rope, on those mornings after she'd been raped she would also wake to stained sheets, thunderous headaches, and paralyzing lethargy.