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.
"Fifteen."
"فيفتين"
Fifteen.
Fifteen.
Fifteen.
« Fifteen ».
Fifteen.