Board Thread:News and Announcements/@comment-24179430-20150508150547/@comment-91424-20160810075351

8Rob wrote: At that point I think they already had in mind the time travel thing for the season 3 finale. I'd say that's exactly why Charming didn't mention the box. I'd have been confusing/spoilery

No. That line was from the season four episode "Shattered Sight". The thing with the jewelry box took place in "Snow Drifts", at the end of Season Three.