The Most Epic Battle Is Happening on 'Arrow's Season Finale Tonight!

The Most Epic Battle Is Happening on 'Arrow's Season Finale Tonight!

It look like Katie Cassidy isn’t taking any crap on tonight’s Arrow season finale — in fact, she’s not on the good side at all!

In “Lian Yu”, the battle between Oliver (Stephen Amell) and Adrian Chase (Josh Segarra) culminates in a final epic battle on Lian Yu — and Black Siren is on Chase’s side.

That doesn’t really bode well for Team Arrow, does it?

Stephen also teased that a special cameo is coming in the episode.

“My favorite cameo in the #Arrow Season Finale is not featured in any of the previews. Love this person so much for coming back,” he wrote on Twitter.

Wonder who it is!

Arrow airs TONIGHT @ 8PM ET/PT on The CW.

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Photos: The CW
Posted to: Arrow, Television