As the police inspect a murder scene, the famous detective Akechi happens to be at the right place, right time to help.  Or is she?
But that's because we 
were alone in our rooms.
eso fue porque estábamos 
en nuestra habitación...
... eso se debe a que estábamos 
en nuestra habitación.
Mas é porque nós estávamos nos nossos quartos, sozinhas.