Board Thread:Spoilers!/@comment-27061694-20151010095949/@comment-24674051-20151013162046

I am not 100% sure, but one of the scenes in the promo looks like Snow and Lancelot in Granny's. Admittedly, Granny's is in Camelot in the flashbacks, so that could still be in Camelot, but I think that Lance is in Storybrooke.

Of course, I will also suggest that it is possible that Guinevere cast the curse using Lances heart, and the promo scene with Lance in Granny's was in Camelot. I still don't trust Guinevere. She strikes me as a truly manipulitive queen.