Board Thread:Spoilers!/@comment-26159109-20151007195419/@comment-25733960-20151122063508

I think it's both: back in Camelot and now in Storybrooke.

We saw in the promo that Hook went for Rumple to get his revenge now that their roles are inverted

It was probably the same back in Camelot. But Rumple has not there: He was in Storybrooke. And there is only one way to go back to Storybrooke: The Dark Curse

Maybe Hook cast the curse and Emma pulled a Zelena