If I were the Invaders by this point I would have a long list of everyone that David Vincent knows so that we wouldn’t accidentally stumble into his life and have him show up and ruin our plans. In this one it turns out that Vincent’s college roommate, Ted Willard, has been caught up in an Invader plan that had nothing to do with Vincent and Vincent comes and saves the day.

Ted and his brother, Martin, run the Willard Sanitarium. Martin is working with an Invader named Adam who is testing a new device for controlling humans. Mostly they were testing on patients, who ended up dying, but when Ted found out what was happening they decided to test it on him (Martin agrees, because the alternative is to just kill Ted). But it turns out that before they got to Ted, he sent a letter to his old friend David Vincent for help.

It all goes as expected. Vincent shows up, investigates, in the end the Invaders are stopped. Vincent gets a scene where he gets to avoid being run over by a car. We also have Ted’s fiance Janet in the mix. Oh, and Vincent’s rich friend Scoville turns out to own a company that services some machines in the sanitarium, so he has one of his employees go in under the guise of a yearly checkup or whatever, and I was surprised and pleased that that guy survived.

The device they’re testing is basically just an upgraded version of the hypnotism they already always use, but I guess for use at a longer range. I was very disappointed to learn that, in spite of the title of the episode, the device wasn’t allowing the Invaders to actually possess the bodies of humans and drive them around. Oh well. Anyway, Martin Willard is working with the Invaders because he is convinced they are going to win and he thinks that if they can just take over the world leaders and surrender, it will result in fewer deaths. In the end, Ted has to kill his brother to stop the plan, but Ted and his fiance get to live on as a new ally of Vincent and Scoville (and employee guy), so it’s a victory in spite of the tragedy.