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The
sound of a key turning in the lock could be heard.
"Claud," Miss Amory exclaimed, "what on Earth does Treadwell think..."
"Treadwell is acting upon my instructions, Caroline," Claud interrupted sharply.
Richard
Amory addressed his father, "May we ask the meaning of all this?" he
inquired coldly.
"I'm
about to explain," replied Sir Claud. "Listen to me calmly, all of
you. To begin with, as you now realize, those two doors," he gestured
towards the two doors on the hall side of the library, "are locked on
the outside. From my study next door there is no wait out except through
this room. The French windows in this room are locked."
Swiveling around in his seat to Carelli, he explained as though in
parenthesis, "Locked, in fact, by a patent device of my own, which my
family knows of, but which they do not know how to immobilize."
Again addressing everyone, Sir Claud continued, "This place is a rat
trap."
He looked at his watch. "It is now ten minutes to nine. At a few minutes
past nine, the rat catcher will arrive."
"The
rat catcher?" Richard Amory's face was a study in perplexity. "What rat
catcher?"
"A
detective," explained the famous scientist dryly as he sipped his
coffee.
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