This is the first volume to appear in the Cambridge edition of the works of John Webster, beginning with the plays The White Devil and The Duchess of Malfi. The following volume planned for publication will include the other plays as well as the poems and prose. While both The White Devil and The Duchess of Malfi are available in modernized versions, the Cambridge edition incorporates the more recent editorial scholarship including valuable information on Webster's biography, critical methods, and textual theory. In particular, the edition integrates theatrical aspects of the texts with their bibliographical and literary features in a way not previously attempted for a scholarly edition of a Jacobean dramatist. The edition also presents previously unpublished material including a fragment of an otherwise lost play and a hitherto unknown poem and provides a brief biography of Webster, a history of the Webster canon, and reception history for each play.