What if there was another Petrova Doppelganger. We have Amara the original Petrova and her doppelgangers Tatia, Kathrine, and Elena. So that makes four doppelgangers. This doppelganger wasnt told in The Vampire Dairies because no one knew of her and she makes the 5th Petrova doppelganger. Meet Serena Wood.All Rights Reserved