But who is she working for? And what do they have to gain from her marriage to Arthur – the heir to the throne of Camelot? Can Merlin get to the bottom of this mystery before Arthur makes the biggest mistake of his life? While trying to uncover her dark secret, Merlin learns that Elena's nanny Grunhilda is a Pixie. Yet Merlin has his doubts when he discovers Elena may not be exactly who she claims to be.
Arthur is pressured into an arranged marriage with a visiting princess, Elena, as the fantasy drama continues.
