In the ninth episode of SPY x FAMILY's second part (Episode 21 overall), Fiona Frost, a fellow agent codenamed Nightfall, visits the Forger home with the goal of replacing Yor, sparking significant jealousy, while Anya uses her abilities to protect the family. You can stream this episode of Spy x Family on platforms such as Amazon Prime Video and Crunchyroll. Spy x Family, Season 1, Pt.2 - Uncut - Prime Video