A Final Visitor

Waiting

George Hicks was seven at the time. His brother, Kyle, had let him take the top bunk bed that night and he felt great. As he nestled into the covers of the top bunk, he looked over his room from above like a victorious king. His brother, who was two years older, just reminded him not to let the power go to his head.
A sharp sound woke George up at quarter to two that morning. It was short, seemingly cut off, but definitely there. It had come from down the hall, outside his room, near his mother's room. His door was open slightly, but no light came in. All the lights were still off, as usual at that time of night.
He looked to his door with a mixture of curiosity and fear. He hadn't heard enough of the sound to deduce what it was, but his fear was suddenly intensely renewed as a vicious scent caught his nostrils. It was a mixture of metal, heat and something grossly unnatural unlike anything he had ever smelled before - something that smelled like only the most brutally putrid decay.
Just as he peeked out from under his covers, the door to his room opened a little more, creaking as it did so. The light coming from his bedroom's only window, thanks to a streetlight a short distance from the house, was dim but sufficient enough to make silhouettes visible.
A hunched shape shuffled into his room, and although he desperately wanted to look away he simply couldn't. His gaze was locked on the doorway in terror as this foreign thing entered. A low growl seemed to be emanating from it, and it's body looked so abnormal. A large head or snout was visible, and the terrible smell only grew stronger as it entered the room.
Suddenly, a large portion of its body dropped to the floor. It became apparent then that it had been carrying something. The object it had been carrying was humanoid in nature.
Once it had dumped its cargo in George's room, it left again. It returned moments later with another humanoid shape, this one smaller, and it dumped this one on top of the first. The stench of metal and sickliness grew more potent as time went by with the humanoids being in the room as they slumped where they had been discarded.
The creature lowered its unnaturally long snout to the first humanoid, almost as if it was kissing them on the head, before raising up again. It pressed the tip of its snout to the wall next, moving in strange patterns for whatever reason. It occasionally dipped down again to kiss the humanoid's head, before returning its attention to the wall.
It became apparent to George, after five minutes of pure horror as he watched this thing in the dark, that it was writing something.
Once it was finally finished, it stepped back and observed its masterpiece. It seemed to nod, and its growl formed what was almost a laugh like sound, before it moved closer to the bed. George squeezed his eyes shut, but nothing happened. He heard the sheets below being disturbed, and he realised that this visitor of his was laying on the bed below him. Its growls were noticeable every now and then, and the stench was so thick it was nauseating.
He didn't sleep at all. He merely stared at the shapes and at the wall, all of which were bathed in darkness.
By 5:00am, the morning light had set in just enough for him to make out the mutilated corpses of his mother and brother, along with the words "I KNOW YOU'RE AWAKE" smeared on his wall in their brains.