[The knocking is unexpected, but not enough to draw Lupin too far from his work. He sets down his drafts for the necessary components of his master scheme and, not bothering to remove his glasses or straighten his tie (saying nothing about donning his jacket), shuffles quickly over to the door.
He stands just on the other side if it, but doesn't open it.]
its one of those weeks.
He stands just on the other side if it, but doesn't open it.]
Who's there?