S2, E2: Merlin helps Arthur disguise his identity to enter a jousting tournament, little knowing that a deadly assassin has arrived in Camelot to kill the Prince. Arthur is determined to win Camelot's jousting tournament on his own merit, so with Merlin and Gwen's help he goes undercover as an ordinary man. However, Arthur's in for a shock when Gwen challenges him to give up his spoilt, lofty ways.