THE EPIC SEASON FINALE OF ARROW — With a new ally on his team, Oliver (Stephen Amell) engages Diaz (guest star Kirk Acevedo) in an epic final battle. James Bamford directed the episode written by Wendy Mericle & Marc Guggenheim (#623). Original airdate 5/17/2018.— (9:00-10:00 p.m. ET)
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