The lab maintenance is finished and the system comes back online. The police come to the island, but the investigation has made no progress. At last, however, Saikawa solves the mystery of the locked room and prepares to confront the culprit.
If I tell them I know the truth, 
they'll confess everything.
.إن أخبرته بأنّي أعرف الحقيقة، سيعترف بكل شيء
Wenn ich sage,
dass ich die Wahrheit kenne,
Si le digo que conozco la verdad,
Si le digo que conozco la verdad,
Quand il constatera
que je l’ai démasqué,
Se dirò che conosco la verità,
dovrebbe confessare tutto.
Se eu disser que já sei de toda a verdade,
tenho certeza que ela confessará.