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.
Sensei...
...سينسي
Professor Saikawa,
ich bleibe auch auf der Insel.
Sensei.
Profesor.
Monsieur,
je reste sur l’île, moi aussi.
Sensei...