Schoolteacher and single mom Frankie Barrera has always been fiercely protective of her younger sister Izzy—whether Izzy wants her to be or not. But over the years, Izzy’s risky choices have tested Frankie’s loyalty. Never so much as on a night five years ago, when a frantic phone call led Frankie to the scene of a car accident—and a drunk and disoriented Izzy who couldn’t remember a thing. Though six friends partied on the outskirts of...