American composer Jake Heggie’s masterpiece, the most widely performed new opera of the last 20 years, has its highly anticipated Met premiere, in a haunting new production by Ivo van Hove. Based on Sister Helen Prejean’s memoir about her fight for the soul of a condemned murderer, Dead Man Walking matches the high drama of its subject with Heggie’s beautiful and poignant music and a brilliant libretto by Terrence McNally.