User blog comment:Zathronas/Analysis by an author: Prediction. Season 2 volume 1/@comment-187.214.78.141-20140110044724

My own changes to this theory which is absolutely brilliant:

-Blake had a little sister who died of sickness beacuse the humans deny her any kind of medical care... but the truth is that she is still alive and safe, her sickness is in control but the new leader of the White Fang kidnapped her and is blackmailing Blake's father to stand down and give him complete leadership of the White Fang or else, her daughter (whose location is unknown) dies.

-Cinder opens an old book, a photo falls and she picks it up. Her expression becomes full of anger as she burns the photo. The photo falls into the ground and the camera zooms it revealing Summer, Cinder, Ozpin and an unknown man whose face in the photo is already burned.