Red and the Task Force spring into action after learning who betrayed them.

Air Date: Friday, May 20 (08:00PM – 09:00PM) on NBC.

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THE BLACKLIST -- "Marvin Gerard (#80): Conclusion Pt 1" Episode 921 -- Pictured: James Spader as Raymond "Red" Reddington -- (Photo by: Zach Dilgard/NBC)