In 1938, T.S. Eliot befriended Mary Trevelyan, the warden of the Student Movement House. Their relationship was domestic rather than artistic, characterized by churchgoing, day trips to the English countryside, and Eliot cooking up sausages in his shirtsleeves. Over the years, Mary came to believe it might grow into something more, and was shattered by Eliot's unannounced marriage to his secretary. Mary left a unique cache of diaries, letters, and pictures from two decades of friendship, and Erica Wagner uses it to bring this untold story to light.