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.
I'm sure I would have
أنا متأكد أني كنت
Hätte ich das als
Highschool-Schüler gewusst,
te aseguro que habría decidido...
te aseguro que habría decidido...
Si j’en avais entendu parler
au lycée,
Se l'avessi conosciuto alle superiori,
Se eu tivesse descoberto 
aquele lugar durante o colegial,