The Ribos Operation | The Key to Time | FULL EPISODES | Season 16 | Doctor Who: Classic

Watch the complete story of The Ribos Operation - a Fourth Doctor adventure from 1978. Subscribe to Doctor Who: Classic for more full episodes: https://bbc.in/DWClassicSubscribe The Doctor is given the task of reassembling the six parts of the Key to Time at the behest of the White Guardian. He and fellow Time Lady Romana go to the icy world of Ribos in search of the first segment. There they encounter a pair of con-men and a megalomanic ex-tyrant... First Broadcast between the 2nd - 23rd September 1978 Starring Tom Baker as the Fourth Doctor alongside Mary Tamm (Romana) CHAPTERS: 00:00:00 Episode 1 00:25:02 Episode 2 00:49:53 Episode 3 01:14:36 Episode 4 WATCH MORE: Compilations: https://bbc.in/DWCompilations Regenerations: https://bbc.in/DWRegenerations Title Sequences: https://bbc.in/DWTitleSequences New to Who: https://bbc.in/DWNewToWho Official Podcast: https://bbc.in/DWOfficialPodcast MORE ABOUT DOCTOR WHO: Welcome to the Doctor Who: Classic channel! Travel in the TARDIS with full episodes dating back to the Doctor's first incarnation. See the Doctor meet the Daleks and Cybermen for the first time, watch all of their regenerations and relive friendships with companions like Sarah Jane Smith, Ace and many more. #DoctorWho This is a commercial channel from BBC Studios. Service information and feedback: https://www.bbcstudios.com/contact/contact-us/