In an anonymous city of the United States of America, a terrible murder took place. A body has been found, the crime scene is now secure. This death has remained a mystery. But the investigation that you, players, readers, are going to lead will allow to unmask the culprit. Crimebox Investigation can be played in different ways, depending on whether you prefer to solve the case or to embody the different justice participants. You play either the Investigation or the murder trial. During the investigation, each player plays cards in order to get more and more details about the circumstances of the murder, the exhibits and their DNA analysis, the suspects and their personality. During the trial, one player is the public prosecutor. He must indict a suspect and has to explain how the suspect killed and why. Other players are the defense lawyers and must exonerate their client from the charge.