The Great Dragon returns Merlin to Camelot where, convincing Gaius of Morgana's treachery, they break the curse on Uther by burning the mandrake doll. Nonetheless, they feel he would not believe them if they exposed Morgana. Whilst Cenred's men lay siege to the castle, Morgana uses a rowan wood magic staff to create an army of sword-wielding skeletons to fight the knights inside Camelot. Merlin destroys the staff, the skeletons disintegrate and, as the tide turns in favour of Camelot, Cenred calls off his siege. Morgana, however, takes the credit for destroying the spell and is acclaimed by her foolish guardian.