Episode One
Series Episode Number: 312World Premiere: Sat 26 Feb 1972 - 5:50pm GMT [BBC One] (United Kingdom)
First Broadcast: Mon 17 Nov 1975 - 6:30pm CST [WTTW 11 Chicago]
Running Time: 24 minutes 40 seconds
6.40 Million (UK)
Chart Position: 76 () (UK)
Recorded on Mon 15 Nov 1971 in TC8
Archive State: RSC conver
The Doctor and Jo visit the Master who is held prisoner on an island. There they learn that several ships have recently been sunk in the area and the Doctor decides to investigate.
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