This episode is so star studded that they kill off Peggy Lipton from Twin Peaks in the cold open. She is one of two newlyweds who are accidentally exposed to a crystal that destroys the oxygen in the immediate area, causing them both to suffocate even though they are outdoors. Obviously David Vincent investigates that, discovers the crystal, and knowing that the regular authorities won’t be help enough, he brings it to a news guy called Booth who has both a radio show and a regular news article to use to spread the news about the aliens. Booth is played by none other than everyone’s favourite Burgess Meredith: Burgess Meredith! Booth is impressed by the crystal, but isn’t convinced about the existence of the aliens until he hires a scientist to study it and the aliens kill that scientist. Booth is in. He’s going to help Vincent spread word about the Invaders.

So then the Invaders need a new plan. The leader of this group of Invaders is played by everyone’s favourite Ed Asner: Ed Asner! The Invasner is head of a batch of Invaders who are developing this crystal so they can destroy the oxygen on Earth and make the planet more suitable to the aliens. He knows he can’t let humanity find out about them, so he has to stop Booth’s story. To that end, he brings David Vincent’s family into it.

It turns out that Vincent has a brother, Bob, who has a pregnant wife, Grace. That’s right, it’s Bob and David! The relationship between the brothers has been strained over the last year or so, however long it has been since David has been on his alien-fighting crusade. Bob doesn’t believe in the aliens, so he believes his brother has gone crazy, which changes when the aliens kidnap him and hold him hostage unless David gets Booth to drop the story.

I don’t need to go through all the details, but our heroes struggle with this one. Bob tries to fight his way out of the alien base, proving that action hero-ness runs in the family, but he is not successful. David is willing to discredit himself to save his brother, but Booth asks if Bob’s life is more important than the human race. Booth refuses to back down. It all ends in a climax wherein Invasner, his batch of aliens, and Booth are all killed and all evidence of the alien scheme erased, as usual. And, also as usual, David Vincent walks away leaving just a few new believers behind, except this time, they are his family.

We get some minor details about the aliens’ true forms as well. Oxygen is often considered a necessity for life in our universe, but these guys? They don’t care for oxygen! It actively harms them. It makes me wonder if they aren’t in some way metallic in nature, and they are rusting in a way. It also makes me wonder why they’re bothering to conquer Earth when Mars is right there, with much less oxygen.