Then, Michael Patrick Thornton, who will portray the minor character Lennox as well as a murderer, rolls his wheelchair front and center and cheerfully offers some context to the play, including the information that Shakespeare wrote it in 1605, when theaters were shut down because of the plague. Macbeth witches Phillip James Brannon, Bobbi MacKenzie, Maria DizziaĪs we take our seats, three cast members dressed casually (the witches?) cook something (soup?) on the side of the stage, as if for a potluck dinner. The aggressively inventive director Sam Gold has added an opening monologue and a closing song, and I think they offer clues to what he is trying to do in his version of the tragedy, now running at Broadway’s Longacre Theater through July 10. Shakespeare didn’t write the very beginning and the very end of this generally wan and inscrutable production of “Macbeth,” starring Daniel Craig and Ruth Negga.