In November 2017, a small-time YouTube video creator and two moderators of the 4chan website, one of the most extreme message boards on the internet, banded together and plucked out of obscurity an anonymous and cryptic post from the many conspiracy theories that populated the website’s message board.

Over the next several months, they would create videos, a Reddit community, a business and an entire mythology based off the 4chan posts of “Q,” the pseudonym of a person claiming to be a high-ranking military officer. The theory they espoused would become Qanon, and it would eventually make its way from those message boards to national media stories and the rallies of President Donald Trump.

Now, the people behind that effort are at the center of a fractious debate among conspiracy enthusiasts, some of whom believe the three people who first popularized the Qanon theory are promoting it in order to make a living. Others suggest that these original followers actually wrote Q’s mysterious posts.