The mythical city of Camelot, in a time before history began, is a fantastical realm of legendary beasts and mysterious peoples. In this dangerous world, magic has been banned by the ruthless tyrant; Uther Pendragon. Merlin, a young man gifted with extraordinary magical powers, arrives at the gates of Camelot, sent by his mother to start a new life. Though bright-eyed with wonder, the young sorcerer quickly makes enemies, including the heir to Uther's crown, the headstrong Prince Arthur.

• Colin Morgan
• Angel Coulby
• Bradley James
• Katie McGrath
• Richard Wilson
• John Hurt