Nearly four thousand years ago, ten-year-old Cassandra is standing outside the house she shares with her mother near the harbour town of Amnisos when a volcanic eruption on the nearby island of Thera creates a tsunami, fifty feet high, hurtling towards the coast of Crete.
Everyone knew Poseidon had to be behind this disaster. Gods were always wrecking things when humans did something to make them angry. But why does he rescue Cassandra from the...