Part TwoSeries Episode Number: 551
World Premiere: Sat 7 Mar 1981 - 5:09pm GMT [BBC One] (United Kingdom)
First Broadcast: Mon 6 Apr 2015 - 8:30pm EDT [Retro TV]
Running Time: 24 minutes 3 seconds
7.70 Million (UK)Appreciation Index: 61 (UK)
Chart Position: 57 () (UK)
The Doctor, aware that his time may soon be ending, travels to the Logopolis where a series of fateful events are set in motion.