A Moorish princess shipwrecked on the English coast disguises herself as a boy to protect her virtue. Arriving in London, she’s hired by William Shakespeare as an assistant to his maidservant Kate, who instantly falls in love with the exotic cross-dressing newcomer. This absurdity, familiar to fans of Twelfth Night, is the opening move in Ben Elton’s exquisite Shakespearean remix, The Upstart Crow.