In 1907, in a quiet English village, Theodora Bosanquet answered Henry James’s call for someone to transcribe his edits and additions to his formidable body of work. The aging James had agreed to revise his novels and tales into the twenty-four-volume New York Edition. Enter Bosanquet, a budding writer who would record the dictated revisions and the prefaces that would become a lynchpin of his legacy. Embracing the role of amanuensis and creative counterpoint cautiously at first, Bosanquet kept...