"At first," Dr. O'Connor was saying, "our detector recorded the time periods of--ah--mental invasion as being the same as before. Then, one day, anomalies began to appear. The detector showed that the minds of our subjects were being held for as long as two or three minutes. But the phrases repeated by Charlie during these periods showed that his own contact time remained the same; that is, they fell within the same skewed bell curve as before, and the mode remained constant if nothing but the phrase length were recorded." "Hmm," Malone said, feeling that he ought to be saying something. Dr. O'Connor didn't notice him. "At first we thought of errors in the detector machine," he went on. "That worried us not somewhat, since our understanding of the detector is definitely limited at this time. We do feel that it would be possible to replace some of the electronic components with appropriate symbolization like that already used in the purely psionic sections, but we have, as yet, been unable to determine exactly which electronic components must be replaced by what symbolic components." Malone nodded, silently this time. He had the sudden feeling that Dr. O'Connor's flow of words had broken itself up into a vast sea of alphabet soup, and that he, Malone, was occupied in drowning in it. "However," Dr. O'Connor said, breaking what was left of Malone's train of thought, "young Charlie died soon thereafter, and we decided to go on checking the machine. It was during this period that we found someone else reading the minds of our test subjects--sometimes for a few seconds, sometimes for several minutes." "Aha," Malone said. Things were beginning to make sense again. _Someone else._ That, of course, was the spy. "I found," Dr. O'Connor said, "on interrogating the subjects more closely, that they were, in effect, thinking on two levels. They were reading the book mechanically, noting the words and sense, but simply shuttling the material directly into their memories without actually thinking about it. The actual thinking portions of their minds were concentrating on aspects of Project Isle." There was a little silence. "In other words," Malone said, "someone was spying on them for information about Project Isle?" "Precisely," Dr. O'Connor said with a frosty, teacher-to-student smile. "And whoever it was had a much higher concentration time than Charlie had ever attained. He seems to be able to retain contact as long as he can find useful information flowing in the mind being read." "Wait a minute," Malone said. "Wait a minute. If this spy is so clever, how come he didn't read _your_ mind?" "It is very likely that he has," O'Connor said. "What does that have to do with it?" "Well," Malone said, "if he knows you and your group are working on telepathy and can detect what he's doing, why didn't he just hold off on the minds of those geniuses when they were being tested in your machine?"