"Millions of people around the world have reported encountering shadowy entities who instill fear, shortness of breath, and even paralysis. Is it possible that the so-called “Shadow People” are more than mere figments of the imagination? Could they be visitors from other worlds… or even other dimensions?"
https://www.history.com/shows/ancient-aliens/season-18/episode-8
Ancient Aliens: Strange Shadow People Terrorize Humans (Season 18)
Ancient Aliens: Aliens in Disguise Warn Researcher - "We've Taken Many Humans" (Season 18)
"Far in the past before Atlantis existed,
men there were who delved into darkness,
using dark magic, calling up beings
from the great deep below us.
Forth came they into this cycle.
Formless were they of another vibration,
existing unseen by the children of earth-men.
Only through blood could they have formed being.
Only through man could they live in the world.
In ages past were they conquered by Masters,
driven below to the place whence they came.
But some there were who remained,
hidden in spaces and planes unknown to man.
Lived they in Atlantis as shadows,
but at times they appeared among men.
Aye, when the blood was offered,
for they came they to dwell among men."
https://www.crystalinks.com/emerald8bw.html