A compilation of footage from this then unfinished story (from the television series Doctor Who (1963)) was released on BBC Video, introduced by and with to camera linking material from Tom Baker. When a dangerous artifact goes missing from the study of retired Time Lord, Professor Chronotis, he calls on the help of the Doctor and Romana. Also looking for the artifact is Skagra, who is armed with a mind-draining sphere.
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named this as one of his favourite Doctor Who stories, he had fond memories of the location shoot in Cambridge and he was disappointed not to finish it in the studio. See more
During the scene where Skagra attaches the sphere to Professor Chronotis' head, the professor's eyeglasses are off his head during a close-up, then on again after a couple of camera shot changes that return to a close-up, all while his hands are empty and his arms are flailing about. See more
I told you you've got the time wrong, Doctor.
Yes, but you're always saying that.
You're always getting the time wrong.
Footage from this episode showing The Doctor and Romana in a boat, and later of them entering the TARDIS, was used in Doctor Who: The Five Doctors (1983) (TV). See more
Remade as Doctor Who: Shada