There’s something in ‘t
That is deceivable.

– William Shakespeare

Twelfth Night, Act 4, Scene 3. After wondering is Olivia is mad because of her sudden new-found love for him, Sebastian becomes suspicious that there is some mix-up. And sure enough there is, Olivia thinks he is Cesario, Sebastian’s twin Viola who has been disguising herself as a man. Things are never quite what they appear to be in this play.