At the foot of the stairs the match went out, and he paused to strike
another; and at the same moment a knock, so quiet and stealthy as to be
scarcely audible, sounded on the front door.

The matches fell from his hand and spilled in the passage. He stood
motionless, his breath suspended until the knock was repeated. Then he
turned and fled swiftly back to his room, and closed the door behind him.
A third knock sounded through the house.

"What's that?" cried the old woman, starting up.

"A rat," said the old man in shaking tones--"a rat. It passed me on the
stairs."

His wife sat up in bed listening. A loud knock resounded through the
house.

"It's Herbert!" she screamed. "It's Herbert!"

She ran to the door, but her husband was before her, and catching her by
the arm, held her tightly.

"What are you going to do?" he whispered hoarsely.

"It's my boy; it's Herbert!" she cried, struggling mechanically.
"I forgot it was two miles away. What are you holding me for? Let go.
I must open the door.

"For God's sake don't let it in," cried the old man, trembling.