The Lying Game

When Lizzy Meyers goes missing the day after her birthday, her three friends set out on a mission to find her. But after the police found blood that matched Lizzy's, the three are told to give up.

Abigail does until she receives a message in the mail, in a purple envelope with no return address, she is determined to solve the case.

Little did the three friends know that the more they looked, the more lies they had to think up, and the more they dug their own graves.