Board Thread:General Discussion/@comment-25926288-20151116014923/@comment-27257290-20151121021742

I don't think Hook will become a Dark One. Merlin said that was what could happen, and Hook was only certain he would go Dark because he doesn't trust himself to do good. All he got was the power of the Holy Grail, as did Merlin, Nimue etc. and it was Merlin's power that was transferred to him, so it's his choice what to do with it.

I know he emerged from the Dark One vault but I'm sure there will be an explanation for that ... perhaps that the vault summons anyone who has just created a new tether to the sword AND received the power at the same time - i.e. only Emma and Hook, as Rumplestiltskin simply replaced Zoso in his tether, and Merlin and Nimue had their power before they were tethered to either half of the sword. I don't know why it would work like this but at least it would fit.

Anyway, I think/hope this Dark magic stuff will simply be one last test for Hook, and one that he'll pass now that he has found true love. Hook didn't take centuries to fight off his darkness as he said, he took a few weeks of Emma's love to make him a changed man. And after Emma finally let Hook in despite her history of dead boyfriends "because I'm a survivor, love", I refuse to believe the writers would be so cruel as to destroy her newfound happiness once and for all - and if Hook dies in the end I'll stop watching.

(Also I love how you see a glint of Killian's hook through his cloak - the Darkness can completely recreate Killian's body and give him a new outfit but can't regrow his hand xD)