Board Thread:Spoilers!/@comment-1916997-20150926195527/@comment-6175354-20151110124145

8Rob wrote: I'd say Arthur will be defeated in 5x09

So, I won't be 100% filler I believe Eddy and Adam said, that 5.09 does not have a Storybrooke plot.... it will be a flashback within a flashback episode.

From the two promos and the leaked image, it appears that Emma defeats Arthur in the 5.08 flashback. Arthur probably forced Merlin to capture the Nevengers, in an effort to get to Emma. This led the two dualing each other, and Hook somehow getting mortally injured. Would not even be surprised if the wound was caused by Merlin, and turned his magic "dark". Emma tethers Hook to Excalibur, and in turn tranforms into the Dark Swan.