https://screenrant.com/outer-limits-sci-fi-television-before-star-trek/

Star Trek is often seen as the first fully-fledged sci-fi TV show of any great merit, but this forgotten series was actually ahead of it by 3 years.

This Forgotten Sci-Fi Classic Deserves To Be Mentioned With 'Star Trek' and 'The Twilight Zone' (https://collider.com/the-outer-limits-forgotten-sci-fi-classic-star-trek-twilight-zone/)

Feeling uneasy is the name of the game.