In the third episode of the four-part story "The Curse of Peladon," the efforts by the King of Peladon to gain entry into the Galactic Federation are brought to a grinding halt by the resurrection of the sacred -- and apparently deadly -- Pel beast Aggredor. The Doctor (
Jon Pertwee) suspects that the perpetrators of all this intrigue are none other than his old nemeses, the Ice Warriors from Mars. But both the Doctor and the audience are in for quite a surprise. Written by Brian Hayles, "The Curse of Peladon, Episode 3" first aired on February 12, 1972. ~ Hal Erickson, All Movie Guide