The book begins with a chase through the streets of Calcutta in May 1916. Lieutenant Peake pauses for breath outside the ruins of the Jheeter's Gate station knowing that he only has a few hours to live. Inside his overcoat he is sheltering two newborn babies - twins, a boy and a girl. Peake entrusts them to Aryami Bose. Sixteen years later we meet the boy, Ben, and his friends. They have formed a secret club, The Chowbar Society, which meets each week at midnight in the old ruin they have chris ...