Everything you need to understand or teach The Last Time I Lied by Riley Sager.
In Riley Sager's thriller, The Last Time I Lied, Emma Davis has lived years feeling responsible for the disappearance of three girls who were her cabin mates at camp. Fifteen years later, when Francesca “Franny” Harris-White decides to re-open Camp Nightingale, Emma is invited to serve as one of the teachers. Emma returns only because she hopes to find some clue that will solve the mystery of the disappearances. Themes in the novel include the power of revenge, the stigma of mental instability, and the impact of lies.