After stumbling upon a mystery box containing items related to the murders of a serial killer, three teenagers decide to put on their detective hats and investigate the case.After stumbling upon a mystery box containing items related to the murders of a serial killer, three teenagers decide to put on their detective hats and investigate the case.After stumbling upon a mystery box containing items related to the murders of a serial killer, three teenagers decide to put on their detective hats and investigate the case.