You've seen the movies. Maybe you've also even read the book. But do you really understand what's going on with the monster from "It?" If you think it's just a clown, you don't know the half of it, so ...

The most recent episode of It: Welcome to Derry on HBO potentially just revealed a new link to the original It timeline. Marge Truman (Matilda Lawler), one of the kids living in midcentury Derry, ...