When King Uther dies and Britain faces chaos, Merlin presents an unknown named Arthur as the new king by birthright, as the late king's son, against the ambitious desires of his half-sister, Morgan.
Written byChris Chibnall, Michael Hirst
CountryIreland, United States, United Kingdom, Canada
Runtime45 min
On screen
Joseph Fiennes
Jamie Campbell Bower
Tamsin Egerton