Macdonald and Scherf's edition of Frankenstein has been widely acclaimed as an outstanding edition of the novel—for the general reader and the student as much as for the scholar. The editors use as their copy-text the original 1818 version, and detail in an appendix all of Shelley's later revisions. They also include a range of contemporary documents that shed light on the historical context from which this unique masterpiece emerged. New to this edition is a discussion of Percy Shelley's role in contributing to the first draft of the novel. Recent scholarship has clarified the degree to which Percy Shelley contributed to Mary Shelley's original text, and this edition's Note on the Text discusses this scholarship.