A comedy (of errors) by William Shakespeare, based off an even older play by Plautus. It chronicles the misadventures of two sets of long-lost identical twins, with the same name, as they get mistaken for one another. It's also one of the only Shakespearean plays that follow the Classical Unities-- unity of time, unity of place, and unity of story. It's also his shortest play. Incidentally, a "comedy of errors", lower-case letters, is a humorous play that involves mistaken identity and has a happy ending. This delivers in spades.