By Darren Franich
Updated December 27, 2011 at 02:00 PM EST

Merlin began as a frothy reinterpretation of Arthurian legend, with the wise old sage reimagined as a shenanigan-prone teenager attempting to keep his magical gifts a secret while teaching young Prince Arthur how to be less of a prideful doofus. The series has always had a dark edge, though, and the upcoming fourth season (debuting Jan. 6 on Syfy) promises to be especially grim.

In an exclusive look at the season premiere, Morgana goes Sith Lord on some knights; meanwhile, Arthur prepares to make an important speech. Check out the video below, along with an introduction by Colin Morgan (Merlin) and Bradley James (Arthur). Cherish the way they refer to Merlin‘s fourth season as “series 4.” Oh, to be British…

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