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Checkmate

Oliver gets closer to the truth about Prometheus. Meanwhile, Helix refuses to continue helping Felicity until she does a favor for them.
Aired: Mar 15, 2017 Genre: Crime Drama Action & AdventureCasts: Stephen Amell David Ramsey Willa Holland Emily Bett Rickards Paul Blackthorne Josh Segarra Echo KellumCreated By: Andrew Kreisberg Greg Berlanti Marc GuggenheimProducers: Beth Schwartz Sarah Tarkoff Ken ShaneRating: 7.5 Country: United States of America Production: Berlanti Productions, DC Entertainment, Warner Bros. Television, DC