Astounding Stories of Super-Science, August 1930

"Then stand by, invisible. I'm going to get one of my jailors in here and relieve him of his wrist-watch." Marjorie touched that little square button on her own. She instantly became invisible. Kendrick touched a button too, a button he had noticed beside the door. As he had supposed, it brought one of the Vadans. Shutting the door quietly, he seized the fellow before he could move his hand to his wrist. Thwarted in his attempt to vanish from sight, the diminutive guard attempted an outcry. But Kendrick promptly throttled him. Marjorie had reappeared by now and together they bound him to a chair with a gilded cord torn from the drapery. Removing the precious mechanism from his wrist, Kendrick slipped it on his own. "Now let's go!" he said, pressing the protruding square button of the device. "We haven't a minute to--my golly, what a peculiar sensation!" "It is rather odd, isn't it?" she laughed, pressing her own and joining him in that invisible realm. "Feels like a combination electric massage and cold shower! Where are you, anyway? I can't see you." "Of course you can't!" came an unseen tinkle. "Here!" He felt her brush him. "Better hold hands," he suggested, then gave an invisible flush he was glad she couldn't see. "All right. A good idea." Her delicate hand came into his, soft, warm. Heart vibrating even faster than his body, his whole being a-quiver with a strange exaltation, Kendrick opened the door, and they left the apartment.