Alexander Skarsgard, Anna Paquin and Stephen Moyer

True Blood is back — and it's deadlier than ever.

While we've seen humans, vampires, werewolves and whatnot knocked off over the last three seasons, one upcoming death will change the climate of the HBO series. "Somebody who thinks they are very, very powerful gets ambushed," executive producer Alan Ball tells TVGuide.com exclusively.

Alan Ball in negotiations for fifth True Blood season

Thanks to Russell Edington (Denis O'Hare), the vampire king who ripped out a man's spine on live television, there is much unrest among the vampires when the series returns, Ball adds. "There's a lot of stuff going on within the vampire community, which means there's a lot of people who will betray other people."

Who do you think is True Blood's next victim?