Board Thread:Spoilers!/@comment-5094906-20150511220417/@comment-6175354-20150511232709

Mesmermann wrote: We probably see Merlin for the first time. 5A is about Emma being the Dark One and 5B is about Merlin and Camelot. Hmmm.... I kind of want Emma to remain the Dark One, for the whole season. Regardless, Merlin will probably debut during the 100th episode.