She looked at him steadily and said, “Mr. Mason, do you know something? I believe I could beat the lie detector.”
“Why should you?” he asked.
“Just as a psychological experiment,” she said. “I’d like to try.”
“What,” Mason asked, “would you like to lie about?”
“Oh, anything.”
“For instance, about what you were doing here?”
Her eyes widened. “Why,” she said, “I came up here to write a few personal letters. The typewriter was here and I thought I’d tap out a couple of letters to my friends.”
“How long have you been here?”
“I don’t know, five minutes or ten minutes.”
“But you hadn’t started writing when I knocked?”