The maid knocked and the general told her to come in.

A few moments later the maid knocked quietly on the door.

The servant maid knocked at the door and passed in a telegram, saying it had come while they were gone.

A maid knocked at the door less than a minute later.

But by about noon her maid would knock and go in.

Maybe the maid had knocked over something, while starting a struggle in her chair, just to help the phony act.

They arrived at Miss King's door and the maid knocked.

She glanced up as a maid knocked quietly on the open door.

A maid in black and white knocked on the door and asked me what I wanted for luncheon.

The maid knocked on a door to the left of the window; a woman's voice said, "Come in."