Dig two graves

"Seventeen-year-old film noir fan Neve Lanier is a girl who just wants to be seen, but doesn't really fit in anywhere. When Neve is betrayed by her best friend, Yasmin, at the end of the school year, she heads off to a girl's empowerment camp feeling like no one will ever love her again. So when she grabs the attention of the beautiful, charismatic Diane, she falls right under her spell, and may accidentally promise to murder Diane's predatory st...