Jake Heggie’s powerful work has its highly anticipated Met premiere in a 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 poignant music and a libretto by Tony and Emmy Award–winner Terrence McNally. Met Music Director Yannick Nézet-Séguin takes the podium, with mezzo-soprano Joyce DiDonato starring as Sister Helen. The cast also features bass-baritone Ryan McKinny as the death-row inmate Joseph De Rocher, soprano Latonia Moore as Sister Rose, and mezzo-soprano Susan Graham—who sang Helen Prejean in the opera’s 2000 premiere—as De Rocher’s mother. Steven Osgood conducts two performances in his Met debut.