(Warner Bros., 1980 R-rated ). William Peter Blatty (“The Exorcist”) wrote, produced and directed this comedy horror thriller based on his novel “Twinkle, Twinkle, ‘Killer’ Kane.” No one under the age of 17 will be admitted without a parent or guardian. Starts at 7:30 p.m.  Free, at the Library of Congress Packard Campus Theater located at 19053 Mt. Pony Rd. in Culpeper, VA. No reservations required. For more information, call 202-707-9994.