Seven Seasons Later with Many Laughs, Tears, and Excitement, Riverdale Has Come to a Close. the Beloved Cw Hit Series Aired Its Final Episode on Jun. 28, and the Cast Took to Instagram to Share Their Emotional Farewell Letters with Their Fans. Riverdale’s Seventh and Final Season Premiered on Mar. 29 and Saw the Following Cast Members Enter the Halls of Riverdale High for One Last Season. “Here We Go…. .#Riverdale Final Season! Hold on Tight, ” Series Creator Roberto Aguirre-Sacasa Penned via Twitter at the Time. Amid the Final Season, See the Cast’s Sweet Tributes to Their Time on the Show, Below!