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While interacting with Uncle Mason, Tyler discretely looks for his part in dark family secrets. After breaking up a party at the swimming hole, Mason makes the shift in the basement of the old Lockwood property, Tyler follows him into the basement ruins. Mason, who chained himself up there, has to flee and transform into a werewolf in his truck in the woods. After saving Matt, who was bitten by self-control deficient, novice vampire, Caroline, Stefan is in those same woods, fearing lycanthropes to be vampires' natural enemies. Damon is not amused how Elena plays him while on an eventful trip with Alaric to Duke University to search through Isobel's research on folklore and paranormal phenomena, which her assistant continues.