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Season 20 of Doctor Who ran between 3rd January 1983 and 25th November 1983. It starred Peter Davison as the Fifth Doctor.
Overview
The season consisted of six serials and 22 episodes of twenty-five minutes each, plus a ninety minute 20th anniversary special, The Five Doctors broadcast as part of Children in Need. This season sees the departure of companion Nyssa and introduced Turlough. Every story of this season contained an old enemy of the Doctor in an least a minor role, as part of the 20th anniversary of the show.
Stories
- Arc of Infinity
- Snakedance
- Mawdryn Undead - First appearance of Vislor Turlough; reintroduction of Brigadier Lethbridge-Stewart
- Terminus - Final appearance of Nyssa
- Enlightenment - Final appearance of the Black Guardian
- The King's Demons - First appearance of Kamelion
Anniversary Special
- The Five Doctors - Final appearances of the First, Third and Fourth Doctors; reintroductions of the First, Second, Third and Fourth Doctors, Romana, Susan Foreman and Sarah Jane Smith. First Doctor Who appearances of K-9 Mk. III and Rassilon.
Main Cast
Regulars
- The Doctor - Peter Davison
- Tegan Jovanka - Janet Fielding
- Nyssa - Sarah Sutton (departed Terminus )
- Turlough - Mark Strickson (introduced Mawdryn Undead )
Semi-regulars
Guests
- First Doctor - Richard Hurndall
- Second Doctor - Patrick Troughton
- Third Doctor - Jon Pertwee
- Fourth Doctor - Tom Baker (cameo)
- Susan Foreman - Carole Ann Ford
- Sarah Jane Smith - Elisabeth Sladen
- Romana II - Lalla Ward (cameo)
- Jamie McCrimmon - Frazer Hines (cameo)
- Zoe Heriot - Wendy Padbury (cameo)
- Liz Shaw - Caroline John (cameo)
- Mike Yates - Richard Franklin (cameo)
Adaptations and merchandising
Video
VHS
- Arc of Infinity
- Snakedance
- Mawdryn Undead
- Terminus
- Enlightenment
- The King's Demons/The Five Doctors (extended version)
DVD
- Arc of Infinity
- Snakedance
- Mawdryn Undead
- Terminus
- Enlightenment
- The King's Demons
- The Five Doctors