13 December 1975: broadcast of fourth episode of The Android Invasion - last appearance of Ian Marter as Harry and John Levene as Benton The Doctor and Sarah successfully thwart the Kraals. Hooray!
13 December 1980: broadcast of fourth episode of State of Decay. The Doctor kills the Great Vampire with a rocket through his heart and he, K9, Adric and Romana escape. Hooray!