¡°Scabbers!¡± Ron shouted, racing out of the shop after him; Harry followed.
But no one came. Harry raised his head to look at the circle of Dementors across the lake. One of them was lowering its hood. It was time for the rescuer to appear ¡ª but no one was coming to help this time ¡ª
Harry didn't understand what Snape was talking about. Nor, apparently, did Lupin.