This is the conclusion of the double-length season 3. Following the epic outer-space battles of the Dark Phoenix Saga, the X-Men have no relief. The first episode, "A Deal with the Devil" has the US reviving Soviet super-soldier Omega Red to recover a lost Russian nuclear sub. Not having read enough comic books, the spooks believe that they can use Omega Red to do their dirty work. Storm and Wolverine, with a little help from some depth-charges, have to sort out the resulting mess.
This is followed by the two-parter 'Sanctuary", in which Magneto, tired of mankind's hatred and distrust for mutants, decides to creat an orbiting mutant homeland in the form of his Asteroid M. Sadly not all who join him are sincere in their desire for peace. This is one of the best Magneto stories. The Master of Magnetism is always at his best when he is portrayed as a complex man who really desires good, but often believes the ends justify the means. The message at the end of many of these Magneto stories is that it doesn't, and that the use of the wrong means can only defeat good ends. But "Sanctury" shows Magneto defeated by his own idealism. The fate of his betrayer is just wonderful. The full pay-off would not come, however, until the final season of the show.
"Xavier Remembers" is a little weird, as there are a lot of events in it that only take place in people's minds, or on the Astral Plane. "Courage" features the return of the Sentinels - and of Morph, last seen at the end of Season 2. Finally, "Secrets, Not Long Buried" is a spotlight episode on Cyclops that uses classic Western tropes.
All in all a good solid collection of workmanlike episodes.