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.
The murderer may still be in the lab.
.قد يكون القاتل ما يزال داخل المختبر
Der Mörder könnte sich
noch im Institut befinden.
El asesino podría seguir 
dentro del laboratorio.
El asesino podría seguir 
dentro del laboratorio.
Le meurtrier
est peut-être encore ici.
L'assassino potrebbe essere ancora
nel laboratorio.
Pode ser que o assassino 
ainda esteja no laboratório.