Unnamed dream/story idea

excerpt from a dream I had.

Standing in the hall, he noticed something not quite right out of the corner of his eye. He had passed the same room hundreds of times before and couldn’t remember this ever happening. Glancing within, darkness had never before left him afraid. Never gave him the shivers, or the willies. He had never been worried of monsters or anything evil that was said to be traveling through the night. Staring into the blackness within the room, His breath caught. During the day this was the extra bedroom. The old bed, a couple of end tables. Several bookshelves haphazardly full of books. A closet full of holiday decorations and camping gear. At that exact moment however, the feeling of dread filled his very soul. Everyone has the fight or flight gene and he had thought himself a man who would never flee. He would fight if it got down to it. Usually he was smart enough to talk himself out of trouble. Or use humor to deflect the situation. Right now however the instinct to flee and to lose his bowels pushed all other thoughts out of his head. Standing there, watching the inky blackness his imagination was not only wild, but away. Off to directions never before ran. Ideas running somewhere he had no willingness to ever visit again.
Standing, he was paralyzed as to what he should do. Every horror movie told him to run. To get away as fast as possible. Except, all of the animal shows he had watched on the animal channels told him to stand. Every predator from tigers to sharks would get excited when their prey fled, making them all the more deadly. Frozen with the options that in theory either would bring an end to him.
All he could do is just stand there staring toward the stairs. The striped wallpaper in the hallway was fading in places and peeling in others, seemed a bit off. Not being able to say exactly what was wrong, something told him it was not exactly right. He couldn’t really put a finger to it. Almost as one sees the shimmering heat rising off asphalt during summer. The ends of the halls stretched further away. As if the laws of physics no longer applied. Light from the surrounding hallway was being sucked into darkness from the extra room. He always kept the light at the stairs on. Yet looking for it now, the dim flickering reminded him of a flashlight that was just about to die. The entire hallway had a sepia tone to it. The distinct feeling that something was watching him from inside the room kept the hairs on the back of his neck up. He rationalized the only logical answer was, that inside an intruder had been caught in the act. Whomever it had been, they were probably waiting him out, then when he went back to bed any assailant would finish whatever it was he started.
There was plenty of time for anyone standing inside the room to have shot him by now. That he was still alive eased his mind a bit. He wanted to take a step foreword. Nothing happened. Fear and dark radiated from the room. Anything inside most likely could hear His heart pounding. Just as he considered what kind of options he could take, he had heard a creak emanating from the room. he felt a little better that the fear was validated. Cocking his head to hear anything inside the room better. He had heard nothing else. Not the clock downstairs that seemed too loud at times. Nor anything outside which was unusual. Most of the time the noises of animals or trucks driving by would often wake him. The sudden silence was almost as palpable as the dark. His eyes went wide when long sharpened dark grey fingernails attached to skinny black scaly fingers grabbed both sides the door frame. It took a second to register what he was seeing. A scream that had begun had been suddenly lost in his throat..