Watch Once Upon a Time Season 6 Episode 16 online via TV Fanatic with over 7 options to watch the Once Upon a Time S6E16 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, YouTube Purchase, Google Play, Verizon On Demand, and Disney+.
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On Once Upon A Time Season 6 Episode 16, Gideon forces Emma to help him take down the Black Fairy. Killian teams up with an old enemy in his quest.