Every three days, two envelopes, red and black, would be discovered somewhere in the town. In the red envelope, there would be a question about what the investigators had learned during the day. The question would usually be pointed to one of the track teams, meaning whoever was involved with that line of investigation has the highest potential of answering it correctly. The team's answer would be sent to the killer via e-mail, with the address being anonymous. If correct, the killer would clear one of the remaining suspects. If wrong, the number of suspects would remain the same.