sentences:  "City of Death" was broadcast on BBC1 over four consecutive Saturdays beginning on 29 September 1979.At this time, industrial action had blacked out rival broadcaster ITV and as a result, the serial scored very high ratings, averaging 14.5 million viewers over the four episodes; 16.1 million watched the fourth episode, the largest audience ever recorded for an episode of "Doctor Who".The story was repeated on BBC1 across four consecutive evenings from Tuesday to Friday, 12 – 15 August 1980, achieving viewing figures of 6.3, 5.5, 5.6 and 5.9 million viewers respectively.