A few months ago, on an instant messaging service three people started to receive threatening IMs. Those people were Rachel, Jennifer, and Allison. It all started as a normal conversation with Rachel and Jennifer saying that she was Allison. Then things got weird, Rachel asked Allison and found out that it wasn't her. They warned Jennifer about it and thought that it was all over. Then they got messages from the girl saying that she wanted to kill a friend of theirs named Lauren. Once Allison received those messages, she told Lauren and they contacted the police. They haven't heard from her since, but they had a suspect whose name was Sarah. Sarah was taken to the police station, but insisted that she didn't do it. However, Jennifer still thought it was her…