Arrow Season 5, Episode 9 : What We Leave Behind

After Prometheus attacks and nearly kills Curtis, the team discovers that he is connected to one of the businessman Oliver killed when he first returned to Star City. Now Prometheus sets out to prove that everyone close to Oliver dies... by killing someone he knows. Meanwhile, an old friend returns to the bunker. Guest Stars: Katie Cassidy, Rick Gonzalez, Joe Dinicol, Tyler Ritter, Madison McLaughlin, Garwin Sanford, Anup Sehdev, Chenier Hundal, Carly Pope, Keon Boateng, Keri Adams,

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