S1·E24 A Day in Beaumont / The Last Defender of Camelot

In the 1950s a flying saucer crashes on Earth. The crash is seen by a couple. They run into town, but no one believes them. "The Last Defender of Camelot" takes place in 1986 in London and, eventually, Cornwall. An extension of the story by Sir Thomas Mallory, a mid-50's man is drawn toward Cornwall with a sense of urgency. He is jumped by 3 young men, who are thrown aside like playthings. The old man forces one of the younger ones to take him to the boss. The boss is a late-30's woman, who reveals herself as Morgana. Lancelot is quested by her to see Merlin, who is asleep in a cave in Cornwall. Lancelot finds Merlin awakened. Merlin has different plans to resurrect a new king. What does the world's oldest magician have up his sleeve? Who can save mankind? Perhaps the Last Defender of Camelot?