Board Thread:Spoilers!/@comment-27060727-20160225003107/@comment-6175354-20160502213914

Eskaver wrote: Zeus and Hades will be the flashback. I mean, Hades has to have some backstory.

Oh, really.... what makes you so sure of that?

It cannot possibily be, while looking for the missing pages (which Zelena actually has) that Hook stumbles upon Zeus, who in turn tells him about Hades greatest weakness.