Kalidaha is an island of eleven thousand people and one earthen wall. Debjani Mondal, thirty-one, a junior engineer on a new posting, arrives on the last ferry of a hot May evening with a bag, a clipboard and a rule she believes in: the numbers do not lie. By dawn she has found a hole in the embankment that no file admits to. By noon she has met the people who would prefer that she had not. The Block Office says the wall is sound. The contractor says it is sound. The old ferry master says nothing, and watches the sky. Then the barometer begins to fall. With a cyclone three days out, one boat, a locked shelter and a village that has learned not to trust anyone in a government shirt, Debjani has one night to make a thousand people believe her. The sea does not care who is right. A storm thriller about the price of a wall, and the people who stand on it.