The battle to reclaim Camelot highlights Friday's season finale of Merlin (10/9c, Syfy). The episode features daring rescues, a rekindled romance and at least one valiant death. But perhaps the most significant moment is the introduction of an iconic element of the Camelot mythos — the legendary sword Excalibur.
Following last week's loss of the castle to Morgana (Katie McGrath), Arthur (Bradley James) doubts his worthiness as the king of Camelot. To help get him back on track, Merlin (Colin Morgan) introduces him to the legend of Excalibur, explaining that only the true king of Camelot will have the strength to pull the fabled sword out of the stone where it was embedded years ago by Bruta, the first king.
Check out this exclusive clip from Friday's season finale, "The Sword in the Stone, Part 2."