Deadline describes Amick's character as a local newspaper editor who places exceedingly high expectations on her daughter, played by Lili Reinhart.
Amick, who had a recurring role on "American Horror Story: Hotel," joins a cast that also includes KJ Apa as Archie Andrews, Camilia Mendes as Veronica Lodge, Cole Sprouse as Jughead, Ashleigh Murray as Josie, Madelaine Petsch as Cheryl Blossom, Marisol Nichols as Mrs. Lodge and Luke Perry as Fred Andrews.
The drama is a "subversive" take on the world of Archie, set to explore the "darkness and weirdness bubbling beneath Riverdale's wholesome facade."
Roberto Aguirre-Sacasa, Archie Comics' chief creative officer, wrote the pilot script. Greg Berlanti ("Arrow," "The Flash," Legends of Tomorrow") is producing.