R.L. Stine 
Secret Bedroom [EPUB ebook] 

Lea Carson cant believe it when her family moves into the creepy old house on Fear Street. Creepiest of all is the secret room up in the attic. The room has been locked and boarded up for at least a hundred years. A murder was committed in that room, the story goes, and it has been closed up ever since. Lea knows she should stay away. But she thinks she hears footsteps inside the secret room. And voices. Someoneor somethingis waiting for Lea in there. Should she open the door? Can she resist?