Two of the best classic horror movies of the 1980s will be screening soon in a double feature that no fan of the genre should miss. 1981’s An American Werewolf in London and 1987’s The Lost Boys will be playing at Los Angeles’ Hollywood Forever Cemetery, as part of Cinespia’s curated program that often includes genre classics. The one-night-only event is called Full Moon Slumber Party and will take place on Saturday, August 9.