To get to the next episode, you have to invite your Facebook Friends to send you a ticket to unlock it and continue playing the Saga. If you have an iPhone that is jailbroken (or non-jailbroken but you have iFunbox or some other file manager that'll allow you to look at the files), there is an EASY fix for this where each episode automatically unlocks for you after completion. I found this looking through the files for BWS.
P.S. Sorry Android people. Can't seem to figure out how to view BWS file via your file manager.
Here's the video I posted to YouTube to unlock the episode & get unlimited lives: http://youtu.be/wQwPXi0GmA8