Edgar Allan Poe stands alone in the flickering darkness of his mind, trying desperately to convince himself — and us — that he’s not mad. The spell he weaves brings us a highly theatrical adaptation of four tales Poe himself considered his best: “The Raven,” “The Fall of the House of Usher,” “The Pit and the Pendulum,” and “The Tell-Tale Heart.” Enter the world of Poe and check your heartbeat at the door.