A suspenseful segment early in the series, with that ominous title. Arthur Hill, future "Andromeda Strain" star is perfect as the central character, with the screenplay by Danile Ullmann and direction by Paul Wendkos (who similarly had the wonderful "The Mephisto Waltz" in his future) turning up the paranoia quotient effectively. Added touch are scary special effects when Thinnes & Richman's car is destroyed.
Those nasty invaders are putting leading industrialists like Arthur Hill and Robert H. Harris through the ringer, in frightening scenes of draining their brains of useful information. Roy Thinnes and Peter Mark Richman are there to save the day, at least for another week, as those pesky invaders don't give up easily.
Larry Cohen's clever writing about conspiracy theories decades ago, not unlike Oliver Stone's, was a lot of fun. Who would have thought that literally millions of people would believe this sort of strange nonsense, not as entertaining fiction but as some sort of alternate reality we're supposedly living in. I'm still waiting to wake up from the nightmare that occurred in 2016. And my name coincidentally is Larry Cohn, a longtime fan!