Poster of Episodes in Doctor Who - Season 21 - Season 21

Doctor Who - Season 21

Plot: The Twin Dilemma, the first story with Colin Baker as the Sixth Doctor, aired last in the season. This season saw the departure of companions Tegan, Turlough and Kamelion and introduced Peri
First Episode Aired On:
Thursday, January 5 1984
40 years ago
Last Episode Aired On:
Friday, March 30 1984
40 years ago
Number of Episodes: 24