S1·E25 Cinemadness

Owing Jughead a favor, Reggie accompanies Jug to view what he is sure will be a dull old horror flick. But when Reggie discovers and falls in love with the beautiful starlet of the film, Vanessa Blaze, he starts dreaming of having her for real. After viewing another of her films -- in which she plays a biker chick destined to fight off evil imps with a penchant for destruction -- Reggie decides to ask a woman gifted in the art of magic for help in bringing the character into the real world. And all seems well, until it's discovered that not only did the girl enter into Riverdale...so did the imps! And now, it's up to Reggie to clean up the mess he's created.