Board Thread:Spoilers!/@comment-26159109-20151007195419/@comment-24674051-20151120163538

We have not a clue about the context for the script tease. BUT...

Since everyone at Granny's saw the dark goo run out of Merlin, and knowing the Emma's plan was to tether Killian to Excalibur, I think it is safe to say that everyone in Camelot knows that there are 2 Dark Ones. (and 2 controlling objects, since Excalibur was not yet reformed at this point.)

Given the above assumption, the "insanity" is probably a sequence of events that caused by 2 dark ones, one of which is trying to control it (Emma) and the other that is totally out of control (Killian). Couple that with stuff that is probably occuring due to the collusion of Zelena and Arthur, and I think Insanity probably is a fair and accurate description.

The episode is probably going to resolve how excalibur was returned to the stone (probably by Merlin), the capture of all the memories, and the casting of the curse (my guess is Emma/Nimue crushing Merlin's heart).

And did anyone notice in "Birth" that Emma transformed from her White Gown to the Black Leather the moment that she tethered Killian to Excalibur?