"Some day I want to show you the laboratory," Craig was saying.
"It must be so--interesting!" exclaimed Elaine enthusiastically.
"Think of all the bad men you must have caught!"
"I have quite a collection of stuff here at our rooms," remarked
Craig, "almost a museum. Still," he ventured, "I can't promise
that the place is in order," he laughed.
Elaine hesitated. "Would you like to see it?" she wheedled of Aunt
Josephine.
Aunt Josephine nodded acquiescence, and a moment later we all
entered the building.
"You--you are very careful since that last warning?" asked Elaine
as we approached our door.
"More than ever--now," replied Craig. "I have made up my mind to
win."
She seemed to catch at the words as though they had a hidden
meaning, looking first at him and then away, not displeased.
Kennedy had started to unlock the door, when he stopped short.
"See," he said, "this is a precaution I have just installed. I
almost forgot in the excitement."
He pressed a panel and disclosed the box-like apparatus.
"This is my seismograph which tells me whether I have had any
visitors in my absence. If the pen traces a straight line, it is,
all right; but if--hello--Walter, the line is wavy."
We exchanged a significant glance.
"Would you mind--er--standing down the hall just a bit while I
enter?" asked Craig.
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