Before We Were Innocent by Sarah Berman

A decade after surviving a notorious summer tragedy that left their charismatic friend dead and made them media sensations, two former best friends have taken radically different paths—one forging a glossy public persona, the other retreating into obscurity—until a new crisis eerily mirrors the past and draws them back together, forcing them to confront buried truths about loyalty, ambition, and the corrosive pull of guilt.