“The Vampire Diaries” has killed off quite a few of both its beloved and despicable characters in its three seasons on The CW, but one character whom executive producers Julie Plec and Kevin Williamson keep bringing back is the Original vampire Elijah, played by Daniel Gillies. Elijah has returned once again to Mystic Falls at the hands of vampires Damon Salvatore (Ian Somerhalder) and his brother Stefan (Paul Wesley) to defeat the indestructible supernatural Klaus (Joseph Morgan), Elijah’s Original vampire brother who also happens to be a werewolf hybrid. Now their fearsome Original vampire siblings, who were created centuries ago by their mother — the Original witch — to preserve their lives from a plague, are wreaking even more havoc in the spooky town. Elijah might seem to be on the side of mortal Elena Gilbert, played by the show’s star, Nina Dobrev, but she still can’t be sure what his or any of the Originals’ motives are. Hero Complex contributor Nardine Saad talked with recurring guest star Gillies to figure out Elijah’s place among the Originals, his rivalry with Klaus and about his upcoming NBC medical drama “Saving Hope.” This is part 1 of the interview.