From 100% TRUE BLOOD

Alexander Skarsgård has revealed that a storyline in True Blood's third season will deal with his character's life before he became a vampire.

The actor, who plays vampire Eric Northman in the fantasy serial, also spoke about his on-screen father Ulfrick's arrival.

He told MTV: "It is about vengeance - I can't say what - but yeah, something happened when Eric was still human a thousand years ago.

"Early on in [the third season], he gets an opportunity to kind of avenge someone's death."

It has already been confirmed that Ulfrick, played by Hans Tester, is a Swedish Viking king and will be seen in flashbacks to Eric's days as a warrior.

True Blood returns to HBO on June 13.