ANNABETH WAS DEAD, AND IT HADN'T BEEN AN ACCIDENT.

It's hard for Adley to wake up after a night of fun at a sleepover and discover that her best friend was murdered - especially since she remembers fragments of committing the deed.

Adley has no idea why she killed Annabeth Landers. All she knows is that the voice in the back of her head - the devil on her shoulder - is intensifying and connected to why she killed Anna. As days pass, Adley begins to discover a whole new side of herself - one that's more dangerous than anyone could ever imagine.

However, Jessi Alvarez, Anna's other best friend, is dead-set on unraveling the truth about what happened that night. Adley tries to keep any evidence away from herself in hopes that she won't be discovered. But when Jessi wants Adley to help her solve the mystery, Adley is thrown at a crossroads.

Hiding the truth from everyone around her isn't easy. And when people from Adley's past come back to haunt her, it makes the lying game harder to play.

Especially when it takes playing with secrets to stay alive.