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.
Magata Shiki's room was
كانت غرفة ماغاتا شيكي
Dr. Magatas Zimmer
El cuarto de Shiki Magata se 
encontraba perfectamente sellado.
La habitación de Shiki Magata se 
encontraba perfectamente sellada.
L’appartement de Shiki Magata
L'alloggio della dottoressa Magata
O quarto da Dra. Magata Shiki era,
 sem dúvidas, completamente fechado.