This is a critical edition, or "edition critique," of Victor Hugo's play Hernani. The in-depth introduction includes a study of the manuscript, the galley proofs and all other original documents. The preface and play contain a critical apparatus that indicates all modifications made by Hugo during the composition of the work. Following the play, there are literary, historical, linguistic and critical notes, indexes of all words and proper names, a list of the differences between the first edition of Hernani and the edition of 1836, and a bibliography of works related to the play in question.