Merlin: The Witch's Quickening

SYNOPSIS

A ruthless warlock sends Mordred to steal a priceless magical relic Uther has locked deep within Camelot's vaults, relying on Morgana's bond with the boy to keep him safe on his mission. Though many have died trying to get their hands on the Crystal of Neahtid in the past, the true power of the ancient artefact is beyond even Merlin's imagination. Joseph Mawle (Jesus in The Passion) guest stars, with Katie McGrath.