the premise was done long ago in 'brotherhood of satan'
According to sources I've read, this is a show about people who gain immortality by transferring their consciousness into the bodies of other people, presumably younger, healthier, etc. When those bodies age out, the "intruders" simply transfer yet again, thus living forever.
Well, we've all heard that Hollywood long ago ran out of original ideas, and this may be another example. Recently I caught a low-budget thriller by way of Netflix called "The Brotherhood of Satan," a 1971 cult film which had a similar plot, except it was based on Satanism. In the story, a bunch of elementary-age kids are recruited by an evil character, played by a scenery-chewing Strother Martin, to become bodily hosts of a bunch of Satan-worshipping white-haired oldsters. [spoiler follows] And at the end of the movie, they pull it off, and the senior citizens get to re-live another whole life, starting off as 6- or 8-year-olds.
You think maybe the producers of "Intruders" had seen "Brotherhood" in their youth and subconsciously applied the idea to the series? Just wondering....