Summary

A girl arrives late at night. Enter the room trying not to make noise so as not to wake her roommate up, not turn on a lamp to not disturb her, so she has to move in the dark.

When she gets into the bed begins to hear muffled groans, the girl falls silent to listen better.

Imagine that her partner will have brought her boyfriend into the room and will have a passionate night.

But she is too tired to get up and find another place to sleep. Without realizing it falls into a deep sleep between moans and groans.

The next morning you wake up feeling a wetness on his bed, half asleep still bears his hand soaking liquid blanket and leaps after checking that it is blood. On her quilt severed head of her friend with a handkerchief in his mouth to gag served last night.

He room looks like a slaughterhouse, bloodied and everything is written on the wall with the blood of his friend could read:

"Lucky that kindled the light" 

("Suerte que No Encendiste la Luz").

The groans were cries of pain were muffled by the gag as the psychopath skinned and mutilated the victim alive. Without knowing the girl had saved his life by not turning on the light and catch the murderer in the middle of the crime.