Check out the HQ episode stills for Arrow 2.21 titled "City of Blood". While there's no promo images featuring Summer Glau as Isabel Rochev, we know that she will be in this episode; you can catch a glimpse of Summer Glau in her Ravager costume in the promo video for this episode. Hopefully, The CW will release additional images featuring Summer Glau later on, as they did for episode 2.19 "The Man Under The Hood".
The episode is described as follows:
"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."
Directed by Michael Schultz from a script by Holly Harold, "City of Blood" is set to air April 30th. "Arrow" airs Wednesdays at 8 P.M. ET/PT on The CW.
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