During each turn, the players move the characters, using their special powers and placing them either in shadow or light. At the end of each turn, the witnesses declare whether Jack is visible — that is, in light or adjacent to another character — or not (alone in the shadows). This allows the investigator to know which characters are innocent. As the turns progress, the investigator tries to eliminate suspects while Jack tries to escape. Intuition, logic, and cold blood will be necessary for each of the two participants.