Whispers. Steps. Then, stopped. Neighbors, maybe? 

A knock on the wall. No. Inside the wall. It couldn't be the neighbors. 

A loud thud over the ceiling. 

A creak on the old stair wood. 

A hiss inside the old air pipes. Enough. He clicked over the "save" button and selected the "echoes of horror III soundtrack" files directory. 

It was late, he was sleepy, and he should best trying to sleep. 

As soon as he close his eyes, he heard: a whisper, and footsteps. Neighbors?