As she recognized the sound a new thought came to her--a hope, when hope seemed gone.

She stepped noiselessly to the window and looked down.

She was just in time to catch a glimpse of two retreating figures revealed in dark contour beneath the rays of the street lamp.

The next moment they passed out of sight.
They had gone! But they would return--she felt sure of that.

She must get away at once before they did--run out of the door and make for the side street.
She listened for a moment longer.