Theatre needs mystery. In the darkened auditorium, with a crowd of strangers sharing your experience, it is possible to believe in anything you see on the stage: ghosts, miracles and magic. Few playwrights have been as good as engaging with such mystical aspects of life than Conor McPherson, whose previous plays include The Weir, Shining […] The full version of the article Conor McPherson's The Brightening Air at t…