<span class="SFPTagline"> From SCIFIPEDIA </span>

Doctor Who, Season 13 would be the first season that producer Philip Hinchcliffe and script editor Robert Holmes would complete without the help of their predecessors. However, because BBC management had decided to move the season's air dates up several months, they had very little time in which to produce the new season. It ended up being filmed virtually back to back with season 12.

Hinchcliffe had decided that the companion character of Harry was no longer necessary. It had been thought that Harry could handle the more action oriented aspects of the programme if the Doctor's new incarnation wasn't up to it. But, Tom Baker's Doctor proved more than capable in that area. However, actor Ian Marter's contract didn't expire for several more episodes. So, the character was included in "Terror of the Zygons" and also appeared briefly in "The Android Invasion."

Harry's removal was also a part of the slow phasing out of the Doctor's relationship with UNIT. This would be the final season in which the organization or any of its familiar characters appeared for many years. Benton would make his final appearance in the series in "The Android Invasion." Brigadier Lethbridge-Stewart would appear in Terror of the Zygons, but then would be absent until season 20.

Although the season featured no returning villains (Holmes and Hinchcliffe thought returning villains were boring), the scripts for the season were of a consistantly high quality, treating viewers to encounters with the Loch Ness Monster, an anti-matter beast and an Egyptian god among others.

Season thirteen began airing August 30, 1975. The program continued the steady rise in viewership that it had experienced in the last several years.

• Terror of the Zygons (4 episodes)
• Planet of Evil (4 episodes)
• Pyramids of Mars (4 episodes)
• The Android Invasion (4 episodes)
• The Brain of Morbius (4 episodes)
• The Seeds of Doom (6 episodes)