(Warner Bros., 2004). Among the goings-on as Harry, Ron and Hermione return to Hogworts for their third year of wizarding instruction: convicted murderer Sirius Black (Gary Oldman) escapes from Azkaban Prison and the Ministry of Magic entrusts the foul and soulless Dementors of Azkaban to guard Hogwarts from the escaped prisoner. Starts at 7 p.m.  Free, at the Library of Congress Packard Campus Theater located at 19053 Mt. Pony Rd. in Culpeper, VA. No reservations required. Children 13 and under must be accompanied by an adult. For more information, call 202-707-9994.