Nona Parker Johnson is an American actress. She is best known for playing Detective Carmen "Nova" Riley in the crime drama series Law & Order: Organized Crime and Fiona Mixon in the crime drama mystery series Dexter: Resurrection.
Early life Parker Johnson was born in Jackson, Mississippi. She attended Georgetown University where she studied theater and performance and received her Bachelors in Justice and Peace Studies with a focus on Social Justice Art and Performance. She attended University of Southern California where she graduated with a MFA in acting.
Career Her first big role came playing Detective Carmen "Nova" Riley in the crime drama series Law & Order: Organized Crime starring Chris Meloni. She had a recurring role as Ada in the post-apocalyptic horror drama series Fear the Walking Dead She played Rhonda in season 3 of the crime thriller Mayor of Kingstown. As of Summer 2026 she is starring as Fiona Mixon in the crime drama mystery series Dexter: Resurrection.
Filmography Film YearTitleRoleNotes2023Bizarro WorldWomanShort2025Missing RhythmsWomanShort2025AislesNaomiShort2026CalabashIyanaShort
Television YearTitleRoleNotes2021ThemMarthaEpisode: Covenant II2021The Handmaid's TaleVolunteer at anti abortion centreEpisode: Milk2021–2022Law & Order: Organized CrimeDetective Carmen "Nova" Riley18 episodes2023Fear the Walking DeadAda3 episodes2023–2024Mayor of KingstownRhonda5 episodes2025High PotentialPenny HallEpisode: Obsessed2026SugarHannah McDaniels3 episodes2026Dexter: ResurrectionFiona MixonMain role (season 2)
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