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The Crystal Cave

Merlin, Series 3 Episode 5 of 13

When Merlin has an unexpected meeting with the mysterious Taliesin, the wizened old sorcerer takes the young warlock to the crystal cave and shows him a glimpse of the future. But this gift turns out to be more of a curse when, to his horror, Merlin sees Morgana, set to kill Uther.

Merlin knows he must do all that he can to stop the future from playing out. But changing the pages of destiny is a dangerous game, and his actions have fatal consequences. With the whole of Camelot in a state of grief, can the young warlock undo the damage he has caused, or is it too late?

44 minutes

Last on

Tue 2 Apr 2013 08:40


Role Contributor
MorgauseEmilia Fox
Uther PendragonAnthony Head
GaiusRichard Wilson
TaliesinKarl Johnson
MerlinColin Morgan
ArthurBradley James
MorganaKatie McGrath
GwenAngel Coulby
Voice of the DragonJohn Hurt
WriterJulian Jones
ProducerJohnny Capps
ProducerJulian Murphy
DirectorAlice Troughton

TV blog: Creating magic and illusion for a rollercoaster script


Read more from the special effects director on the BBC TV blog.

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