I found this on Disney+ and watched it for the first time in about 25 years.
It's an interesting mix of the genuinely good and the slightly wonky, like a really good amateur production. Obviously the look of the show and its production values are dated. There's a lot of scenes involving people standing close to each other in office sets. I was surprised by the lack of showy special effects, which helped it a lot. There's an odd discussion of atrocities somehow creating monsters, which doesn't fit well with the rest of the story.
It's interesting that all the victims we see are middle aged guys in suits - in fact, 90% of the people seen in this episode are guys in suits. It resisted the temptation (assuming such a thing was viable) to show Gillian Anderson in the bath - "politics" aside, I think shows lose a lot of credibility when they have attractive women as their victims, as the titillation aspect dilutes the drama. The villain resembles someone who used to play clean-cut, boyish characters (Dick Van Dyke, perhaps, or Michael Crawford?), which makes him more unsettling. The contact lenses that he wears look a bit silly. The really unpleasant question of "What must this guy look like in his true form?" is wisely left to the viewer.
Overall, quite good, and simultaneously sinister and low-key.