Watch Once Upon a Time Season 5 Episode 12 online via TV Fanatic with over 7 options to watch the Once Upon a Time S5E12 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 5 Episode 12, as the heroes try to rescue Hook, they learn that the inhabitants of the Underworld have unfinished business with them.