Board Thread:Spoilers!/@comment-27060727-20160808004056/@comment-1916997-20161010010909

Looks like Jekyll and Hyde are from Victorian England, based on the promo (the world is colored). Which explains Dr. Lydgate appearing as well. It also looks we will also see Rumple meeting with Jekyll and Hyde. And finally it looks like they may be twisting the story by switching who is the true "evil side" of Jekyll/Hyde.