"Does that mean it's a lie?"
"Yes. All the waves that you see," she continued, pointing to the line, "represent answers to questions about his personal life. Does he shave in the morning? Does he brush his teeth at night, and so forth. They're comparison questions to show his reaction when he tells the truth. That peak indicates a lie."
"Then," said Strong thoughtfully, "he might be the saboteur."
"Or know who it is," said Joan.
"I've got to get this information to Connel right away!" said Strong. "Can I have this paper?"
"Yes. I made copies. I was just going to take one to the commander when I saw you."
"I'll try to locate Major Connel and you go on and tell the commander what you've found. And Joan—" Strong hesitated.
"Yes?"
"Put in a good word for the cadets, will you?" Strong pleaded. "Both Connel and Commander Walters are all set to blast them right out of the service."
"I'll do what I can—" Suddenly Dr. Dale stopped, her eyes widening with fright. She pointed down the walk behind Strong.