Watch Arrow Season 4 Episode 18 online via TV Fanatic with over 7 options to watch the Arrow S4E18 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 4 Episode 18, "Eleven-Fifty-Nine," Oliver and Diggle learn Malcolm might try to break Darhk out of prison, and Laurel gets a surprising offer.