I gazed at this life-size, moving image of George Prince. He stood somber in the black detention uniform. A dark, almost a girlishly handsome fellow, well below medium height--the rod beside him showed five feet four inches. Slim and slight. Long, wavy black hair, falling about his ears. A pale, clean-cut, really handsome face, almost beardless. I regarded it closely. A face that would have been femininely beautiful without its masculine touch of heavy black brows and firmly set jaw. His voice as he spoke was low and soft; but at the end, with the concluding words, "I am innocent!" it flashed into strong masculinity. His eyes, shaded with long, girlish black lashes, by chance met mine. "I am innocent." His curving sensuous lips drew down into a grim sneer.... The type faded at its end. Halsey replaced the disc in its box and waved the attendant away. "Thank you." He turned back to Snap and me. "Well, there he is. We have nothing tangible against him now. But I'll say this: he's a clever fellow, one to be afraid of. I would not blare it from the newscasters' microphone, but if he is hatching any plot, he has been too clever for my agents." We talked for another half-hour, and then Captain Carter dismissed us. We left Halsey's office with Carter's final words ringing in our ears. "Whatever comes, lads, remember I trust you...." * * * * * Snap and I decided to walk a portion of the way back to the ship. It was barely more than a mile through this subterranean corridor to where we could get the vertical lift direct to the landing stage. We started off on the lower level. Once outside the insulation of Halsey's office we did not dare talk of this thing. Not only electrical ears, but every possible eavesdropping device might be upon us. The corridor was two hundred feet or more below the ground level. At this hour of the night this business section was comparatively deserted. The through tube sounded over our heads with the passing of its occasional trains. The ventilators buzzed and whirred. At the cross intersections, the traffic directors dozed at their posts. It was hot and sticky down here, and gloomy with the daylight globes extinguished, and only the night lights to give a dim illumination. The stores and office arcades were all closed and deserted; only an occasional night-light burning behind their windows. Our footfalls echoed on the metal grids as we hurried along. "Nice evening," said Snap awkwardly. "Yes," I said, "isn't it?" I felt oppressed. As though prying eyes and ears were here. We walked for a time in silence, each of us busy with memory of what had transpired in Halsey's office. Suddenly Snap gripped me. "What's that?" "Where?" I whispered. * * * * * We stopped at a corner. An entryway was here. Snap pulled me into it. I could feel him quivering with excitement. "What is it?" I demanded in a whisper. "We're being followed. Did you hear anything?"