The Vampire Diaries S02E16
The House Guest
Plot: The Salvatore party is unpleasantly surprised that killing Elijah didn't harm but release Katherine. Damon indignantly rejects her flirtation. Dr. Jonas Martin uses invisible astral projection to enable his son Luka to retrieve the ash dagger and thus revive Elijah, but Damon notices so, finds back and thus kills the unidentified knave. Grieved even worse, Jonas attacks Jeremy, traitor witch Bonnie and her girls night friends, but ends up dead and surprisingly restoring Bonnie's powers.
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