Then he skipped blithely down to his mother's boudoir and rapped on the door,--not timidly or imploringly but with considerable authority.

Receiving no response, he moved on to Anne's sitting-room, whence came the subdued sound of voices in conversation.

He did not knock at Anne's door, but boldly opened it and advanced into the room.
"Hello! Here you are," said George amiably.
He was met by a cold, disapproving stare from his mother and a little gasp of dismay from Anne.

It was quite apparent that he was an intruder.
"I wish you would be good enough to knock before entering, George," said Mrs.Tresslyn severely.
"I did," said George, "but you were not in.

I always knock at your door, mother.