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.
didn't show anyone entering the room.
.لم تظهر أحدًا يدخل الغرفة
war niemand, der das Zimmer
betreten hatte.
non hanno ripreso persone che vi entravano.
não registraram uma imagem 
sequer de alguém entrando nele.