Riverdale (2017)

S3E11 Chapter Forty-Six: The Red Dahlia

When one of their friends falls victim to a mysterious attacker, the gang bands together to uncover the latest enigma haunting Riverdale. At the same time, Betty teams up with an unexpected partner to investigate a troubling string of fatalities plaguing the community. Meanwhile, Archie grapples with his own challenges as he embarks on a new journey, and Jughead confronts Ms. Mulwray, rumored to be Hiram's mistress.