In the conclusion of the four-part story "The Curse of Peladon," the Doctor (Jon Pertwee) discovers that the much-feared sacred Pel beast Aggredor is actually as timid and docile as a lamb. He also realizes at last that neither Aggredor nor the dreaded Ice Warriors are responsible for sabotaging the planet Peladon's efforts to gain acceptance in the Galactic Federation. But if all this is true, then who is the villain of the peace? The part of King Peladon is played by David Troughton, the son of Patrick Troughton, Jon Pertwee's predecessor in the role of the Doctor. Written by Brian Hayles, "The Curse of Peladon, Episode 4" first aired on February 19,1972. ~ Hal Erickson, Rovi