The Seeds of Doom: Part Six 1976
8.8 289 Chase is obviously under Krynoid control. The Doctor suspects possession but, with the mountainous Krynoid nearing maturity and whacking the mansion to pieces, he concerns himself with the bigger picture and orders the mansion - with Sarah and him still inside - to be bombed.
Runtime: 22 min
Starts: Tom Baker, Elisabeth Sladen, Tony Beckley, John Challis
Director: Douglas Camfield