Unique features include an extensive overview of Shakespeare's life, world, and theater by the general editor of Signet Classic Shakespeare series, plus a special introduction to the play by the editor Sylvan Barnet, Tufts University. It also contains dramatic criticism from the past and present, and a special introduction to the play by the editor, Herschel Baker, Harvard University.
The Signet Classics edition of William Shakespeare's comedy of lovers misled.

Romantic folly and false identites abound as an unusual love triangle takes the stage in this play about Orsino, the infatuated Duke of Illyria; Olivia, the countess he pursues; and Viola, the woman disguised as a man who comes between them.

This revised Signet Classics edition includes unique features such as:

- An overview of Shakespeare's life, world, and theater
- A special introduction to the play by the editor, Herschel Baker
- Selections from Barnabe Rich, Of Apolonius and Silla, the source from which Shakespeare derived Twelfth Night
- Dramatic criticism from Samuel Johnson, William Hazlitt, Charles Lamb, and others
- A comprehensive stage and screen history of notable actors, directors, and productions
- Text, notes, and commentaries printed in the clearest, most readable text
- And more...