The Doctor noticed a extra shadow in the attic "vashta nerada,,,:" He coughed. He didn't want to miss out on that, "Stay in the light and count the shadows." His eyes were alert . He was too sick to deal with them really. "Rose get in the TARDIS."
He was shivering, he slowly moved towards his ship being careful to stay in the light.
Being curious he wanted to go investisgate, but he didn't want to loose Rose.