Watch the preview for the next episode of Arrow, "Checkmate," which follows tonight's big reveal that Prometheus is District Attorney Adrian Chase.
OLIVER SEEKS THE TRUTH â€” Oliver (Stephen Amell) gets closer to the truth about Prometheus. Meanwhile, Helix refuses to continue helping Felicity (Emily Bett Rickards) until she does a favor for them. Ken Shane directed the episode written by Beth Schwartz & Sarah Tarkoff (#516). Original airdate 3/15/2017.
Arrow airs Wednesdays at 8pm ET on The CW starring Stephen Amell.