Stephen Amell's Oliver Queen will be forced to forge some uneasy alliances with the likes of Malcolm Merlyn, Nyssa al Ghul, Digger Harkness and fan-favorite Slade Wilson in Arrow's season finale.

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Titled "Lian Yu," the episode will not only bring to an end the fifth season but also see Oliver's long journey from shipwrecked party boy to hardened crime-fighter come full circle, as the action will culminate on the island where Oliver's story began.

Lian Yu -- DEATHSTROKE, NYSSA AL GHUL, MERLYN AND DIGGER HARKNESS JOIN OLIVER'S BATTLE AGAINST PROMETHEUS -- The battle between Oliver (Stephen Amell) and Adrian Chase (Josh Segarra) culminates in a final epic battle on Lian Yu. After recent events, Oliver decides to recruit a group of unlikely allies -- Slade (guest star Manu Bennett), Nyssa (guest star Katrina Law), Merlyn (John Barrowman) and Digger Harkness (guest star Nick. E. Tarabay) -- to defeat Chase. However, Chase has his own army -- Black Siren (guest star Katie Cassidy), Evelyn Sharp (guest star Madison McLaughlin) and Talia al Ghul (guest star Lexa Doig) -- and the forces collide in an explosive season finale. Jesse Warn directed the episode written by Wendy Mericle & Marc Guggenheim (#523). Original airdate 5/24/2017.

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Airing Wednesdays at 8 p.m. ET/PT on The CW, Arrow stars Stephen Amellm Emily Bett Rickards, David Ramsey, John Barrowman, Willa Holland, Paul Blackthorne and Echo Kellum.

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