User blog comment:27finnsprincess/Finn may be the Tragedy/@comment-4889451-20121022235330/@comment-74.5.139.49-20121022235622

Just like Incendium was, although at the time the viewer likely wasn't aware of it. The Lich being a cliffhanger is obvious and the 1/2 hour season 5 premier is likely going to be the conclusion.