There are three episodes remaining on this season of True Blood.

But creator Alan Ball has already revealed a major season four spoiler, saying in an interview a few weeks ago that witches would play a prominent role next summer on his HBO hit.

Now, Ball has gotten even more specific, admitting to Entertainment Weekly's Michael Ausiello that Hallow Stonebrook - a "were-sorceress" from Charlaine Harris’ fourth Sookie Stackhouse novel - will be introduced in 2011.

Ball refers to this character as "a medium. She communicates with the dead, and she’s interested in developing further powers.”

In the book, Stonebrook casts a spell on Eric and is described as a tall, trim and brunette. Based on that information, sound off below and/or in our True Blood forum:

Who should play this key season four role?

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.