Watch Arrow Season 5 Episode 16 online via TV Fanatic with over 7 options to watch the Arrow S5E16 full episode. Affiliates with free and paid streaming include Amazon, iTunes, Vudu, Netflix, YouTube Purchase, Google Play, and Verizon On Demand.
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On Arrow Season 5 Episode 16, Helix refuses to continue helping Felicity until she does them a favor, and Oliver gets closer to the truth about Prometheus.