17:35Doctor Who (1963–1996)Season 12Revenge of the Cybermen: Part 4BBC One Duration: 25 minutes Audio described Signed Sat 10th May 1975, 17:35 on BBC One West MidlandsAvailable for 10 monthsWatch nowTheir plan to blow up Voga thwarted, the Cybermen intend to crash Nerva into it. Vorus is almost ready to launch his rocket at Nerva, but Sarah is still trapped on board.GenresDramaSciFi & FantasyBrandDoctor Who (1963–1996)SeriesDoctor Who (1963–1996): Season 12 Source: BBC Online