Who Wrote The Storybook? - A Fan Theory by Zach Van Norman
In the first part of this theory (which can be found here), I discussed the source of the Dark powers (Neverland), why Peter Pan wants Henry (in short: to undo the Dark One and return the power to Neverland), and the idea that the person who gave Pan the drawing of Henry is also the person who wrote Henry’s storybook. Now I’ll reveal who I think that person was:
