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.
The elevator's number is changing.
.رقم المصعد يتغيّر
Die Fahrstuhlnummer
hat sich geändert.
¡El número del ascensor cambió!
¡El número del ascensor cambió!
La lettre a changé sur le panneau.
Il numero sull'ascensore sta cambiando!
O número na tela 
do elevador mudou.