Gone Girl

Your best friend Alexis Lockhart has been missing for five years. When the police put the investigation on hold after three years, you lose all hope. But one day you get called to the office at school, where there are sheriffs waiting with your mom. They say they found Alexis's body. They take you to the police station to say your goodbyes, but when you see the dead girl on the table, you realize it's not Alexis. What will happen next?