'Half-Blood Prince' opens in Boston

From Left: Zach Keating, 18, Lauren Herlihy, 17, Mike Feblowitz (Harry), 18, Colleen O'Donnell, 17, all of Winchester.
From Left: Zach Keating, 18, Lauren Herlihy, 17, Mike Feblowitz (Harry), 18, Colleen O'Donnell, 17, all of Winchester.
Taylor Adams/Globe Correspondent