Saikawa and Nishinosono return to the camp, putting off trying to find a solution to the case. But they can't stop thinking about it. They go back to the lab and investigate Dr. Shiki's rooms again, where they find a strange number that is a clue.
Do you remember that day?
هل تذكرين ذلك اليوم؟
Erinnerst du dich an diesen Tag?
¿Recuerdas ese día?
¿Recuerdas ese día?
Te souviens-tu de cette journée ?
Si ricorda quel giorno?
Você se lembra do dia
 em que os perdeu?