The Girl That Is Buried Alive

There was this group of friends that were close. Like all the time they would meet together before and after classes plus, they would have lunch together. They would talk about their best friend who was the leader of the group. The friends would talk about what happened to her, the night she went missing. They are looking into her investigation to know what happened to her. They are looking for clues to see who killed. It comes out that she really is not dead. She was just buried alive. The girls are looking deeper to see what really happened to her. No one knows what really happened to her. There is this person that is sending messages but, they don't know who is sending them. They think they might know who it is, but they got it and that they would find who killed her.