With new information about Aaron Peel, Villanelle goes undercover as a New Yorker named Billie to befriend Aaron’s sister, Amber but there is conflict between Villanelle and Aaron.
Aaron apologises to Villanelle and invites her to go to Rome. Villanelle interrogates Niko whilst Eve visits the psychologist. In Rome, Villanelle discovers Aaron’s plans but Eve becomes jealous of their relationship.