Fandom dramas that just live in your head & you still think about them?

In 2017, in my fandom, some person appeared and start to claiming that she is author's daughter. She wrote fanfiction that was very popular and posted a lot of interesting facts on Twitter about how her father's book was created, what was the inspiration, etc. At one point she started saying that there was a second version of the book and that she could publish it, but it would require a lot of money. She basically scammed a lot of people, took their money, and we never saw her again.

What fascinates me about this case is that the author also had a Twitter account and never confirmed that he had a daughter. There were a lot of other things that didn't add up either. And yet, I have to admit, even I was a little fooled by it. Luckily I didn't lose any money, but I had many moments where I just agreed and thought "yes, that makes sense" (it didn't).