The eighteenth season of British science fiction television series
Doctor Who began on 30 August 1980 with the serial The Leisure Hive,
and ended with Tom Baker's last story Logopolis.Season 18 sees the
swan song of Tom Baker as the Fourth Doctor, ending his time after
seven years on the program. New companions Adric (Matthew Waterhouse),
Nyssa (Sarah Sutton), and Tegan Jovanka (Janet Fielding) make their
introductions in Full Circle, The Keeper of Traken, and Logopolis,
respectively. Romana, played by Lalla Ward, departs from the series in
Warriors' Gate, along with John Leeson who returns to voice the robot
K9. With the arrival of Adric, this season marks the first time since
1967 that the show has given the Doctor a party of three travelling
companions.The Master returned to the show, this time played by
Geoffrey Beevers, in The Keeper of Traken. After the events of Traken
the Master was thereafter played by Anthony Ainley, who would continue
in the part for the rest of the classic series' run. Doctor Who (season 18) Biography, NetWorth, Height, Age, Weight, Family, Married, Son, Daughter