It was to be found in Yucca Flats, Nevada. It was, of course, true that Nevada would probably be even hotter than Washington, D. C. But there was no help for that, Malone told himself sadly; and, besides, the cold chill of the expert himself would probably cool things off quite rapidly. Malone thought of Dr. Thomas O'Connor, the Westinghouse psionics expert and frowned. O'Connor was not exactly what might be called a friendly man. But he did know more about psionics than anyone else Malone could think of. And his help had been invaluable in solving the two previous psionic cases Malone had worked on. For a second he thought of calling O'Connor, but he brushed that thought aside bravely. In spite of the heat of Yucca Flats, he would have to talk to the man personally. He thought again of O'Connor's congealed personality, and wondered if it would really be effective in combating the heat. If it were, he told himself, he would take the man right back to Washington with him, and plug him into the air-conditioning lines. He sighed deeply, thought about a cigar and decided regretfully against it, here on the public street where he would be visible to anyone. Instead, he looked around him, discovered that he was only a block from a large, neon-lit drugstore and headed for it. Less than a minute later he was in a phone booth. * * * * * The operators throughout the country seemed to suffer from heat prostration, and Malone was hardly inclined to blame them. But, all the same, it took several minutes for him to get through to Dr. O'Connor's office, and a minute or so more before he could convince a security-addled secretary that, after all, he would hardly blow O'Connor to bits over the long-distance phone. Finally the secretary, with a sigh of reluctance, said she would see if Dr. O'Connor were available. Malone waited in the phone booth, opening the door every few seconds to breathe. The booth was air-conditioned, but remained for some mystical reason an even ten degrees above the boiling point of Malone's temper. Finally Dr. O'Connor's lean, pallid face appeared on the screen. He had not changed since Malone had last seen him. He still looked, and acted, like one of Malone's more disliked law professors. "Ah," the scientist said in a cold, precise voice. "Mr. Malone. I am sorry for our precautions, but you understand that security must be served." "Sure," Malone said.