Behind the Magic: The Harry Potter movie franchise has a new director and a new Dumbledore. Things are getting Sirius. An exclusive visit to 2004’s ‘Prisoner of Azkaban’ By Carla Power and Devin Gordon NEWSWEEK Aug. 4 issue — Between takes at the shrieking shack—a ghoulish, precariously quaking house on the fringes of the wizard village Hogsmeade—actor Daniel Radcliffe fiddles with his magic wand. Today’s scene is a doozy: Harry Potter finally confronts the sinister (for now) Sirius Black. OVER THE SCREECHING din of the shack, Radcliffe repeatedly shouts, “You betrayed my parents! You’re the reason they’re dead!” During a...