Doctor Who episode 237: The Seeds of Death – Episode Six (1/3/1969)
Maybe Terrance Dicks was channelling his anger about the amount of rewriting the scripts needed, but this is surprisingly bloodthirsty stuff. Not only does the lovable old second Doctor rig up a solar ray gun to roast the Ice Warriors alive, but he condemns the Martian refugees to burn in the Sun’s orbit before calmly revealing to Slaar the extent of his genocide, and tops it all by killing off the last survivors. Priti Patel would be impressed. But then, the Ice Warriors were evil men.
