Arrow Season 2, Episode 21 : City of Blood

After Slade threatens to take everything Oliver loves away, Oliver decides the fastest way to stop further bloodshed is to surrender to his enemy. Knowing that surrender will surely lead to Oliver's death, Diggle and Felicity go to extreme measures to keep Oliver from confronting Slade. Meanwhile, Thea considers leaving town, and Laurel resumes her crusade against Sebastian Blood. Finally, Slade unleashes his assault on Starling City. Guest Stars: Caity Lotz, Colin Salmon, Summer Glau, Cynthia Addai-Robinson, Sean Rogerson, Kevin Alejandro, Roark Critchlow, Amanda Lisman, Ryan McDonell, Shaughnessy Redden, Vanessa Richards, Garfield Wilson, Lee Vincent, David Nykl, Keri Adams,

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