The twentieth season of British science fiction television series
Doctor Who began on 3 January 1983 with the story Arc of Infinity, and
ended 16 March 1983 with The King's Demons. A 20th Anniversary
special, The Five Doctors, followed in November 1983.Peter Davison
continues his role as the Doctor, accompanied by Janet Fielding (Tegan
Jovanka). While Nyssa (Sarah Sutton) leaves halfway through the season
in Terminus, Mark Strickson arrives as new companion Vislor Turlough
in Mawdryn Undead. In the penultimate serial of the season, the
shape-shifting android Kamelion (voiced by Gerald Flood) is invited
aboard the TARDIS after the Doctor frees him from the Master. Kamelion
accepts, though the character itself would only be seen again in
Season 21's antepenultimate serial, Planet of Fire.Past Doctors return
for the 20th Anniversary special, with Patrick Troughton and Jon
Pertwee appearing as the Second Doctor and Third Doctor. The First
Doctor returns, played by Richard Hurndall as original actor William
Hartnell died in 1975. Tom Baker was asked to return to play the
Fourth Doctor but declined. Doctor Who (season 20) Biography, NetWorth, Height, Age, Weight, Family, Married, Son, Daughter