Viewers of The Vampire Diaries have already met Silas, the ancient witch who is up to no good on the latter half of Season 4.

But CW sources now confirm we'll soon meet the actor behind Silas, as Scott Parks has been cast in this key role.

The little-known star most recently appeared on Homeland as a CIA agent, but his face won't actually show up often over the next few weeks. Look for Silas to continue to take on various faces and forms as we move ahead to the May 16 finale.

The Vampire Diaries returns with a new episode on April 18. Take a look at the Mystic Falls prom now!

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