Ironically, of the main four Merlin actors, the only other one to be on Doctor Who was Angel Coulby, who'd competed against Karen Gillan for her role as Gwen. At the start of the show, Coulby ...

When Gwen is snatched from Camelot without warning, Merlin knows there can be only one person responsible: Morgana. Arthur is determined to rescue his Queen, but she is locked in the Dark Tower ...