There's a gnawing scratching at the door
It's unlocked but doesn't open easily 
The gnawing stops, dropping to the floor
A gentle thud sends shivers so eerie
The door creaks open, slightly ajar now
Edging closer and closer something 
Moves slowly towards the gap somehow
It's invisible to those who are seeing 
But not to those who are looking carefully
To most, the door opens of its own accord
But some, they see the thing so clearly
Not scratching now, it's coming forward