Prepare yourselves, Vampire Diaries fans. This Thursday's new episode will answer many questions you may have about Klaus, the Originals and the man who has been hunting them for decades.

Joseph Morgan teased last week that the flashback-heavy "Ordinary People" will definitely "change the game," and my exclusive interview with Sebastian Roché only enhances that hype.

"This episode will make it extremely clear what the relationship is between Klaus and Mikael," the actor behind the latter says, adding that his character being freed from his slumber by Katherine has "reawakened his hunger for revenge."

Against whom, though? Klaus? It's safe to assume, but Roché would not offer up any more spoilers.

He did say that we'll discover more about Mikael over the next few episodes, referring to the vampire hunter as a "frequent flier." He also shot down the notion that Klaus and Mikael are related.

"He's calm, but ruthless," explains the veteran actor, who has appealed to sci-fi fans in the past on Fringe and Supernatural. "There are interesting factors about why he's hunting and they'll come out in time."

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