Knights from a parallel universe arrive on Earth to find the legendary sword Excalibur. And only the Doctor and Ace with the assistance of Brigadier Lethbridge Stewart and save the Earth from total catastrophe.

Starring:

Elisabeth Sladen, Frazer Hines, Jacqueline Hill, John Levene, John Scott Martin, Jon Pertwee, Katy Manning, Nicholas Courtney, Pat Gorman, Patrick Troughton, Peter Davison, Tom Baker, William Hartnell, William Russell

Genre:

Adventure, Drama, Sci-Fi