Arrow season 5 episode 16 is titled “Checkmate.” According to the episode synopsis, “Oliver Queen gets closer to the truth about Prometheus. Meanwhile, Helix refuses to continue helping Felicity Smoak until she does a favor for them.” For a refresher on what happened last time, read my recap of episode 15.
In the Arrow season 5 episode 16 trailer, Oliver finds out that Adrian Chase is Prometheus. Then, Prometheus tells him, “I gave your girlfriend an exclusive.” But, he means that he kidnapped Susan Williams. So, Oliver asks Prometheus, “What did you do to her?” Then, Oliver tells the team they have to find Susan. But, Adrian says, “I’m ten steps ahead of you and you haven’t even figured out what game we’re playing yet.” Watch the Arrow season 5 episode 16 promo video below.
In the Arrow season 5 episode 6 behind-the-scenes video, executive producer Wendy Mericle explains that in this episode Prometheus “fully checkmated” Oliver. Then, she says, “He can’t fight him as Green Arrow. He can’t fight him as the mayor.” She says that Prometheus has rendered Oliver powerless. Plus, she says that Felicity will go in deeper with Helix as a result of what Prometheus has done. Watch the Arrow season 5 episode 6 behind-the-scenes video below.
Since Adrian Chase is Prometheus, there’s now a question of who’s under the Vigilante mask. But, according to Entertainment Weekly, executive producer Marc Guggenheim said that question won’t be answered in Arrow season 5.
And, in other Arrow season 5 news, Mericle recently said that the flashbacks will end after this season. She told CinemaBlend:
The flashbacks will be done at the end of the season, yeah. We will always have it, I think, as a potential device. We’ve established this visual language for the show, so we can always do some from a different character’s point of view. But Oliver’s flashbacks, in terms of telling that particular story, this will be it.