Air Date: October 29, 2009 at 12:00 AM PDT
Halloween hits Mystic Falls! As Vicki's behavior becomes more dangerous, Stefan tries to help Vicki deal with her urge to feed. Meanwhile Elena tries to convince Jeremy to stay away from Vicki. Caroline gives Bonnie the necklace she took from Damon to wear with her Halloween costume, and when Damon tries to take it back, he is surprised by Bonnie's abilities. Bonnie discusses the incident with Grams and learns more about her family's past. Trying to cheer Vicki up, Matt takes her to the high school's haunted house, but the evening soon takes a terrifying turn.