In Stargirl Ep. 9: Brainwave, tensions rise among the JSA members after Courtney (Brec Bassinger) suggests who she wants to recruit next to the team. Meanwhile, Barbara (Amy Smart) invites Jordan (Neil Jackson) and his family over for dinner, and Henry Jr. (Jake Austin Walker) makes a surprising discovery about his father. Luke Wilson, Yvette Monreal, Cameron Gellman, Anjelika Washington, Trae Romano, Christopher James Baker, Meg DeLacy and Hunter Sansone also star. Tamra Davis directed the episode written by Colleen McGuinness.