AllMovie

In the second episode of the four-part story "Battlefield," the Doctor (Sylvester McCoy) discovers that the long-ago battle between King Arthur and Mordred of possession of the sword Excalibur has spilled over into the 20th century. A group of warriors from another dimension insist that the Doctor is actually the ancient wizard Merlin -- a conclusion also jumped to by the resurrected Mordred (Christopher Bowen). Meanwhile, the Doctor's friends, Ace (Sophie Aldred) and the Brigadier (Nicholas Courtney), face their own separate perils. Jean Marsh of Upstairs, Downstairs fame, who previously appeared in the 1965 Doctor Who adventure "The Dalek Masterplan," is here cast as the sorceress Morgaine. Originally telecast on September 13, 1989, "Battlefield, Episode 2" was written by Ben Aaronovitch.