User blog comment:PurplePenguin/The Grunkle Stan Mystery/@comment-5200512-20121021014138/@comment-67.54.173.224-20121021024415

Maybe. I read on another site that someone thought the "three letters back" in the theme was about the books, since they showed Dipper's third book, then Gideon's second book, and they think the first one will be shown soon. But that might not be the case, because how could letters mean books? I read on a lot of sites, and probably on this one but I lost track, that the six fingers stand for how many books there are. I know something that argues this point, though.