The Sword in the Stone (1) Merlin : Season 4 Episode 12
TV-PG BBC One 45m
Aired: December 17th, 2011 @ 7:45 PM EST on BBC One
Morgana is now the head of a vast Southron army and a deadly net is closing around Camelot. After the sorceress strikes everyone is forced to run for their lives including Arthur. It is down to Merlin to try and save Arthur from Morgana's clutches.
