If you've encountered any mention of The Lifespan of a Fact by John D'Agata and Jim Fingal, you've probably heard that it's about one guy (D'Agata) who wrote an essay about a teenager who killed himself in Las Vegas, and another guy (Fingal) who was hired to fact-check that essay and discovered that a lot of it was made up.

the fear / like a part of myself, like another head / that no one can see