The Genesis 6 Conspiracy, by Gary Wayne, is a provocative theory rooted in the biblical account of Genesis 6:1-4, where the ‘sons of God’ (fallen angels) have sex with women to produce the Nephilim, who are bent on humanity’s destruction.

Here's what it says in the King James Bible:
¹And it came to pass, when men began to multiply on the face of the earth, and daughters were born unto them,
²that the sons of God saw the daughters of men that they were fair; and they took them wives of all which they chose.
³And the LORD said, My spirit shall not always strive with man, for that he also is flesh: yet his days shall be an hundred and twenty years.
⁴There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became mighty men which were of old, men of renown.
I mean, it's not even an esoteric idea.
It's literally in the Bible.
Gary argues that the offspring of the fallen angels survived the Flood, and their descendants can be traced today, woven into the fabric of secret societies, including aristocracy such as the Black Nobility.

It sounds bonkers—which is probably why it’s overlooked in most churches.
But what if it’s true?
And it came to pass when the children of men had multiplied that in those days were born unto them beautiful and comely daughters. And the angels, the children of heaven, saw and lusted after them, and said to one another: ‘Come, let us choose us wives from among the children of men and beget us children.’
— 1 Enoch 6:1-2
Of course, there’s much debate in Christian circles, which might also account for the silence.
That said, I find Gary's take the most intriguing.

➡️ Put simply, descendants of the Nephilim—giants born as the offspring of angels and humans—live among us, secretly working with Satan through secret societies to enslave humanity and bring the Antichrist. (Their gigantism has diminished over time through interbreeding and dilution of their original angelic-human hybrid traits.)