BEGIN SLIDESHOW Riverdale Chapter Thirty Promo: The Noose Tightens Following last night’s episode of the series, The CW has released the first promo for next week’s episode of Riverdale! Check it out in the player below! Titled “Chapter Thirty: The Noose Tightens” and set to air March 28, the episode is officially described as follows: “UNWELCOMED GUESTS – Just as the town’s mayoral race gets underway, Riverdale High’s own student council election heats up.