S03E06 The Changeling Slide

“The Changeling”

General information

First Aired: 16 October 2010
Viewers: 6.40 million
Written by: Lucy Watkins
Directed by: David Moore
Guest Stars: Michael Jenn, Georgia King, Simon Williams, Miriam Margoyles, and Michael Cronin (Recurring)
Filming locations: Castell Coch, River Ely Miskin and Speech House Lake


Arthur is pressured into an arranged marriage with a visiting princess, Elena. Merlin’s reservations are vindicated when he discovers Elena may not be exactly who she claims to be. Whilst trying to uncover the dark secret hidden inside her, Merlin learns that Elena’s nanny is a pixie. But who is she working for? And what do they have to gain from this marriage? Can Merlin get to the bottom of this mystery before Arthur makes the biggest mistake of his life?

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The changeling