loudly, breaking Langdon’s train of thought. “You know I’ve never been shy about my distaste for the paranormal and PSI science. Remember my Scientific American cover?” “I do,” Katherine said, smiling. “Dr. Brigita Gessner, don’t call her a neuro-PSI-entist.” “Yes,” she said, laughing too loudly again. “Everyone got in on that joke. A fan sent me a mouse pad with my quote: ‘There’s no PSI in science.’ And a colleague even joked that I should

