Penelope Ann Miller to play Archie's nemesis in 'Riverdale' Season 3

Penelope Ann Miller is to play a recurring role in Season 3 of The CW's "Riverdale." File Photo by Jim Ruymen/UPI Lili Reinhart of "Riverdale" attends Entertainment Weekly's Comic-Con closing night celebration party at FLOAT at the Hard Rock Hotel in San Diego, Calif. on Saturday. Photo by Howard Shen/UPI Camila Mendes of "Riverdale" attends Entertainment Weekly's Comic-Con closing night celebration party at FLOAT at the Hard Rock Hotel in San Diego, Calif. on Saturday. Photo by Howard Shen/UPI Cole Sprouse, Camila Mendes, Casey Cott, Madelaine Petsch, KJ Apa, Lili Reinhart, Charles Melton and Vanessa Morgan of "Riverdale" arrive at The CW network's 2018 upfront presentation on May 17 in New York City. File Photo by John Angelillo/UPI KJ Apa and Charles Melton arrive on the red carpet at The CW Network's 2018 upfront on May 17 in New York City. File Photo by John Angelillo/UPI

July 23 (UPI) -- Penelope Ann Miller has joined the cast of The CW's young-adult drama Riverdale for Season 3.

The show is a pitch-dark Archie Comics adaptation.

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Miller, whose credits include The Artist, Carlito's Way and The Freshman, will play Ms. Wright, a prosecutor determined to convict Archie Andrews (played by K.J. Apa) of a murder Hiram Lodge (played by Mark Consuelos) framed him for at the end of Season 2, The Hollywood Reporter said.

Season 3 of Riverdale is to begin Oct. 10. A 3-minute trailer previewing what fans can expect in the upcoming episodes was shown during the weekend at San Diego Comic-Con.

Showrunner Roberto Aguirre-Sacasa also told the crowd during a panel discussion about the series, "There will definitely be another musical episode," according to EW.com.

The show's ensemble also includes Camila Mendes as Veronica, Lili Reinhart as Betty and Cole Sprouse as Jughead.