Behind the Iron Mask, a three-actor chamber musical based loosely on The Man in the Iron Mask opened this week in London’s West End to terrible reviews, and announced it will close. How bad were the press notices? “It’s so bad that it is merely unendurable,” wrote Charles Spencer in the Daily Telegraph. “There’s no insane flourish to its mediocrity, no sublimity to its awfulness. It is just relentlessly, agonisingly third-rate.” The cast, he said, “perform as if they have been on a prolonged Mogadon bender”.