Kaitlyn Dever(Toni), Nicole Beharie(Annie), Marquis Rodriguez(George Keller), Hamish Linklater(Joe Keller), Lauren Bittner(Nancy Breaux), Matthew Cardarople(Frank White), Cheryl Freeman(Kate), Christian Cote(George Keller), Sebastian Cote(George Keller), Victoria Leigh(Teen Patient), LeVera Sutton(Marta), Brad Heberlee(LSU Professor), Erin Wilhelmi(Julie White), James Matthew Ryan(Sarcastic Party Guest), Marquise Gary(Boy on Bike (uncredited)), Vin Scialla(Liftoff Brass Bandleader (uncredited)), D. Dumebi Egbufor(News Anchor), Anthony Hervey(The Trumpeter), Jean McCormick(Nurse), Sebastian Deerkop(Parade Attendee (uncredited)), Ezri Alyn Lutz(Monster Band Groupie (uncredited))