Twelfth Night is a Comedy written by English playwright William Shakespeare, who is widely considered to be the greatest writer of the English language. Twelfth Night is a play about Olivia, who after the death of her brother, goes into seclusion. After a shipwreck is Orsino's land, Viola disguises herself as a man and falls in love with Cesario. Twelfth Night is an important work of William Shakespeares, and is highly recommended for fans of his works as well as those discovering his plays for the first time.