They sat down and played. At ten o'clock Mrs. Prince came to the door with a note. "I am sorry I didn't bring it before," she said, "but it was left in the letter-box."
"Open it, Saunders, and see if it wants answering."
It was very brief. There was neither address nor signature.
"Will eleven o'clock to-night be suitable for our last appointment?"
"Who is it from?" asked Borlsover.
"It was meant for me," said Saunders. "There's no answer, Mrs. Prince," and he put the paper into his pocket. "A dunning letter from a tailor; I suppose he must have got wind of our leaving."
It was a clever lie, and Eustace asked no more questions. They went on with their game.
On the landing outside Saunders could hear the grandfather's clock whispering the seconds, blurting out the quarter-hours.
"Check!" said Eustace. The clock struck eleven. At the same time there was a gentle knocking on the door; it seemed to come from the bottom panel.