With True Blood entering the finale of its sixth season on Sunday, Aug. 18, the show's cast has hinted at what's ahead for their characters.

Anna Camp, who plays the villainous Sarah Newlin on the show, told ETOnline that there were some big changes ahead for the vampire world.

"Fans can expect to see the vampires changing the way they can live in the world," Camp explained. "You've seen a little bit of that with Bill walking in daylight. I think True Blood has a certain set of rules of how the characters live in the world, but that's about to change. It expands the show in a way that will excite and interest the fans. It's also kind of shocking!"

True Blood Season 6 Spoilers: Preview of August 18 Finale & More Evil Ahead for Sarah Newlin

Deborah Ann Woll, who plays Jessica, discussed the aftermath of vampires, such as herself and Pam (Kristin Bauer van Straten) and Tara (Rutina Wesley), drinking Bill's blood to sustain themselves during the day.

"We'll see what that does to us moving forward," Woll told TVGuide in a Sunday report. "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."

The season finale, titled Radioactive, will feature Bill (Stephen Moyer) discovering that "salvation comes at a price," Jason (Ryan Kwanten) sensing a firsthand vampire attraction and Sookie (Anna Paquin) trying to determine her future with Warlow (Rob Kazinsky), according to the press release for the finale. Meanwhile, a new threat to both humans and vampires will emerge as the series ends its sixth season.

The season 6 finale of True Blood airs Sunday, Aug. 18 at 9 p.m. on HBO.

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