TMS part 52: Who is Gideon?

So here we have Snake and Pericles wondering who Gideon happens and Mabel explains to them her history with the kid. Meanwhile Gideon inttergoates Dipper and belives the reason he wants Dipper dead  is because he's jealous that his big girl crush doesn't notice him and Mabel notices him. So will Dipper escape or will he die?