Quite probably, the best serial of this season. Its the first of a loosely connected trilogy of stories featuring the return of The Master.
Its excellent in every way. Its written well, has a superb cast, and it looks great. There's so much to like. The Doctor and Adric make a really good team alone together. The Melkur is a great design. The sets and costumes are beautiful.
Some cast notes...
Geoffrey Beavers plays the decayed Master in this serial. He is also the husband of Third Doctor companion actress Caroline John, who played Liz Shaw.
John Woodnutt guests in this, following his appearances in Spearhead from Space, Frontier in Space, and most notably Terror of the Zygons.
This is the first appearance of both future Master, Anthony Ainley, and future companion Nyssa, played by Sarah Sutton.
