The water cure : a novel
(Book)

Determined to protect his wife and daughters from the chaos and violence of men on the mainland, King moves them to an isolated island, lays out barbed wire, and anchored buoys with a clear message: Do not enter. He institutes cult-like rituals and therapies to fortify them from the spreading toxicity of a degrading world. When King disappears, they retreat further inward... until the day two men and a boy wash ashore. Sexual tensions and sibling rivalries flare as the sisters confront the amorphous threat the strangers represent. -- adapted from jacket