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.
They didn't call it from the roof.
.لم يستدعِه من السطح
Er hat ihn nicht
vom Dach aus gerufen,
No lo llamó desde la azotea.
No lo llamó desde la azotea.
Personne ne l’a appelé d’en haut.
Naquele momento, o elevador 
não foi chamado do telhado,