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.
No one went in. No one left.
.لم يدخل أحد، ولم يخرج أحد
Nadie entró, nadie salió...
Nadie entró, nadie salió...
Personne n’est entré ni sorti.
Nessuno è entrato o uscito.
Ninguém entrou. Nem saiu.