[ CW ] In five sentences , tell a horror story .

The last human on Earth entered his home, locking the door securely. 
 
 It was a ritual to do this, because he was not sure what beasts could be outside since a virulent plague swept through all of mankind over a decade ago, especially as experimentation with bacteria that would turn wild animals into human - like killing machines, devoid of mercy, had begun mere months before everyone died. 
 
 He knew he was the last one, at least within 30 square miles, through intricate use of thermal imaging cameras and powerful computers, all of it stolen, it was n't like there was anyone out there to stop him, and the computers were always scanning for a human like figure, so he knew he was alone. 
 
 Until, he fell asleep, and did n't notice a blinking dot rapidly approaching his house, or the images the cameras fed of a creature with two legs, two arms and a head, all misshapen and deformed, shuffling it's way to him. 
 
 He knew he was alone until a slimy slap on the door accompanied with a voice like sandpaper roused him from his sleep, saying; 
 
 *'' let me in'' * 
 

