'Originals' Creator Reveals Secrets Of Werewolf Pregnancy

Julie Plec talks Hayley's little bundle of joy while at San Diego Comic-Con.

Things won't be so easy for Hayley (Phoebe Tonkin) in the Big Easy. As we learned during the backdoor pilot for "The Vampire Diaries" spin-off "The Original," the werewolf is pregnant with hybrid Klaus' baby — and a coven of witches is using her and her unborn child to force the bloodsucker to do their bidding.

It was a plot twist few (including the cast) saw coming, and one that left plenty of unanswered questions (including, "What is it?") after the April 25th episode aired. But star Joseph Morgan may have the best query of the bunch:

"Does it turn every full moon when it's in the womb?" he asked creator Julie Plec when we spoke with the cast during San Diego Comic-Con.

Plec was ready with an intriguing answer — one that seemed to surprise the assembled cast members.

"Well, I will tell you this: We did have dialogue in the original episode, and I think we are putting it into the episode that will be our first episode in October," Plec teased. "We're talking about Hayley's pregnancy and how do you know, and she says, 'Look up.' And it's a full moon, and she says, 'I'm not turning.' You know, that's werewolf culture. When women are pregnant that's the one time the curse releases itself so the werewolf bloodlines can continue to procreate."

"The Originals" follows the millenia-old Mikaelson family of undead, first introduced in "The Vampire Diaries," as they return to New Orleans and Klaus tries to reclaim rule from protégé Marcel (Charles Michael Davis).

"The Originals" premieres Tuesday, October 15 at 8/7 C on The CW.