Deborah Ann Woll

[Warning: This story contains major spoilers from Sunday's episode of True Blood. Read at your own risk!]

After a season of trying to prevent the inevitable, Bill's prophecy came true on Sunday's True Blood — but the outcome wasn't quite what viewers expected.

With Warlow (Rob Kazinsky) incapacitated after Eric (Alexander Skargard) drank his blood, Bill (Stephen Moyer) is forced to charge the "vamp camp" on his own. But Eric gets there first, taking his vengeance on his former captors and releasing as many vampires as possible to kill all the humans.

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Unfortunately, Sarah Newlin (Anna Camp) escaped the slaughter, setting the prophecy of our favorite vampires meeting the sun in motion. But Bill was able to feed Jessica (Deborah Ann Woll), Pam (Kristin Bauer van Straten), Tara (Rutina Wesley) and the rest of those locked up his blood, giving them the ability to day-walk. Only Steve Newlin (Michael McMillian) met the sun and perished, while the others had a similar reaction to those who drank Lilith's blood last year.

"We'll see what that does to us moving forward," Woll tells TVGuide.com of those who drank Bill's blood. "One thing I really like about our show is that when it comes to the blood of vampires or fae, we treat it like a drug, where it's not going to necessarily affect everyone the same way. Blood from different creatures at different ages or depending on how they live their lives are all going to affect you differently."

Still, Woll says that she's just happy that Jessica survived; she was sure her character was going to die. "Hell yeah, absolutely I did," Woll says. "When I read about what I did to Andy's [Chris Bauer] daughters, my first thought was, 'I don't know how Jessica Hamby and Andy Bellefleur can be on the same show after something like that. One of them is going to have to go.'

"I was 90 percent sure that prophecy at the beginning just meant that I was going to bite it," she continues. "They made me kill teenagers! They made me kill children. I was like, 'Oh boy, I think that's it.' It was a pleasant surprise and exciting to see Bill get there and save all of our lives."

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After spending most of the season regretting her actions, Jessica has recovered enough to accept Bill's help, but she'll have to face Andy eventually. "There's still a lot of story to be told," Woll says. "Before the end of the season, we will see more of them. It's not over."

Hardly. That Hep-V-tainted shipment of Tru Blood is making its way across the globe, and a significant portion of it was stolen at the close of Sunday's episode. It remains to be seen what steps Bill & Co. will take to help the rest of their kind. "It's definitely a problem," Woll says. "It's going to cause a lot of paranoia."

The season finale of True Blood airs Sunday at 9/8c on HBO.