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.
If you'd thought logically, you'd have known 
the lab was the sole possibility.
.إن فكرت منطقيًا، فكنت ستعلم أنّ المختبر كان الاحتمالية الوحيدة
Hättest du etwas
Schmalz im Kopf,
Si usaras la cabeza, sabrías que el 
laboratorio era la única posibilidad lógica.
Si usaras la cabeza, sabrías que el 
laboratorio era la única posibilidad lógica.
En utilisant un peu ta tête,
Basta usare la logica per capire
che posso essere andato solo al laboratorio...
Pensando de forma lógica, a conclusão
 só poderia ser uma: no laboratório.