When she became pregnant as a teenager in Ireland in 1952, Philomena Lee was sent to a convent to be looked after as a “fallen woman.” Then the nuns took her baby from her and sold him, like thousands of others, to America for adoption. Fifty years later, Philomena decided to find him. Meanwhile, on the other side of the Atlantic, Philomena’s son was trying to find her. Renamed Michael Hess, he had become a leading lawyer in the first Bush administration,...