Mithian was last seen in series four's 'The Hunter's Heart' and rides back into the lives of Merlin (Colin Morgan) and Arthur (Bradley James) as bait in a trap being laid by the devious Morgana (Katie McGrath). Will our wizard hero stumble across the truth before it's too late?
Photo gallery - view images from 'Another's Sorrow' below:
Copyright: BBC ShineMerlin continues this Saturday at 8.20pm on BBC One.
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