Grinning, slowly Lonnie's lower lip crept out and up to squeeze its mate. Then, because it was always better to be sure, he donned the suit to try it against a variety of experimental backgrounds, indoors and out. Over at Pol-Anx, the servo-tracer went to sleep; the desk sergeant yanked the creaking joints of his bunioned feet down off Jason's desk; on the bench in Gov-Park, Jason's communico squeaked briefly and Jason and his four men rose to emergency alert. Two hours later, the Wold Tiara still coruscating in the Fane's blaze of light, the servo-tracer picked up its placid humming. Jason's communico squeaked again and Jason's men relaxed while Jason himself clutched his head with both hands and whispered bitter things. At the same time, Lonnie, whistling cheerfully, drew his legs out of the suit, shook it straight and hung it back on the wall. He was sure now. As sure as he was that the little biochemist and his wife and quintet of daughters would not want for neo-hyperacth or anything else any longer. He giggled a little, thinking of Jason crouched on the bench, glaring vacantly, utterly unconscious of Lonnie passing across the grass so close beside him. At his own convenience, Lonnie selected his night; a full-moon night because his now-invisible grid suit didn't require dark. He picked a fairly early hour, too, because what matter if a few yawps gawked as the Tiara vanished? And that one of those yawps would be Jason, stodgily on his bench, gave Lonnie an extra fillip. Perhaps it was just for this he'd let Jason plug along on a cold trail all these years. So that night, wearily from his bench in Gov-Park, Jason looked up at Friday the 13th's full moon swimming amiably through its own reflected night-brightness. His brain, tired of its everlasting shuttle between worries, presented him with a disconnected memory-fact: "As cited by Zollner," Jason found himself quoting a forgotten textbook, "the Moon's reflectivity is point one seven four ... Nuts!" Angrily, he broke off, thumbed the button of his communico, growled into the microphone on his lapel, "Report." "Adams," came promptly back. "West Entry. Nothing." "McGillis. Patrolling rear wall. All clear in both directions as far as I can see. An' I can see both ends of the Fane in all this moonlight, Chief." "Holland. At Raichi House. Nothing." "Johnson. East Entry. More of the same." Then, "Say, Jase, how about it? These double shifts are getting me." "What's the matter with you, now?" "My feet hurt, Jase. Neither one of us is as young as we used to be, remember. How about knocking off?"