The human body needs two hundred grams of salt to survive. The ocean needs far less to erode an island.

Three days alone on a remote island off the Welsh coast. Four days with his family on the mainland. What happens to the life between them?

The arrangement is precise. It has been measured, agreed, endured.

But erosion does not announce itself. It works without direction, without intention, without pause. Told in alternating voices, the structure that holds a life together begins, almost imperceptibly, to give.

Every Atom Leaves is a restrained, atmospheric literary novel about distance, attention, and the quiet forces that reshape a life. A life arranged against disintegration, shaped by the slow physics of cohesion and loss.