Part Three
Series Episode Number: 438World Premiere: Sat 13 Nov 1976 - 6:07pm GMT [BBC One] (United Kingdom)
First Broadcast: Mon 19 May 1980 - 5:30pm CDT [WTTW 11 Chicago]
Running Time: 24 minutes 20 seconds
13.00 Million (UK)
Chart Position: 12 () (UK)
Recorded on Wed 01 Sep 1976 in TC8
The Doctor enters the virtual world of the Matrix in the hope of tracking down the Master. He is then challenged by a masked opponent to a battle that only one of them can survive.