Episode Four
Series Episode Number: 337World Premiere: Sat 17 Feb 1973 - 5:51pm GMT [BBC One] (United Kingdom)
First Broadcast: Thu 20 Nov 2014 - 8:30pm EST [Retro TV]
Running Time: 24 minutes 10 seconds
8.40 Million (UK)
Chart Position: 27 () (UK)
Recorded on Tue 04 Jul 1972 in TC6
Archive State: PAL 2 VT
The Doctor is desperate to save the lives of Jo and everyone trapped inside the Miniscope, but is hindered by the Inter Minorans who have their own agenda.
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