Shakespearean Play Twelfth Night The Shakespearean Play Twelfth Night provides an instant of what novelist Edith Wharton calls an “illuminating incidents,” or magic “casements” of fiction, through the character of Sebastian. To Wharton illuminating incident reveal and emphasize the inner meaning of a situation. Therefore, the return of Sebastian, Viola’s twin brother, acts as a moment of characters showing their true colors and revealing some of the themes. Viola and Sebastian were in a shipwreck t that led to both of them thinking that the other is dead (Shakespeare 1). After the tragedy, Viola decides to dress as a boy so that she can work for Duke Orsino. While working there, she develops feelings for her master. Contrary, her