Katy Selverstone (left) and Frances Conroy (right) play wives to Patrick Stewart in Arthur Miller's The Ride Down Mt. Morgan. Mt. Morgan, the tale of a bigamist who's devoted his life to the sybaritic indulgences of the Reagan era, only to find his values challenged when he's confronted with a near fatal car accident, begins previews March 21 at the Ambassador Theatre and officially opens April 9 for a run through July 23.