C617 How did they die?(part iii)

The house was a dead silence, not even a tiny worm in the dusty white floor tiles and the walls with their brown masses.

"Number one morgue?" They said it was the morgue, but there were no corpses inside. The rusted metal tables were covered with dirty white cloth.

The cloth was very thick and opaque. If it was not removed, even if a flashlight was used to illuminate the cloth