This will be brush aside like doesn´t matter, i mean according to the latest spoilers( 620) we know nothing will come from this, i mean look at Zelena, she gloads about killing Neal, she doesn´t even feel sorry about it and they all let her hang out with them and want her to be happy,so why would they not do the same with hook? specially if he says he is sorry, i mean Regina killed Snow Father,and lets not forget that they dont seem care about everyone else crimes besides Rumple, i mean, everyone else never get`s a real call out for the crimes they did, they all get the same line " You came a long way, you are a Hero now", of course if they dont go and do like they did with Regina/Marion/Zelena and in 617, they change who was the person that kill him.
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"I offended you with my opinion? Ha, you should hear the ones I keep to myself".