He busied himself changing the tapes on the machine, taking the new one from his pocket, and fumbled the job in his haste. He had plugged in the microphone and was unwinding the long chord when they heard Richardson's voice call out from the next room: "Sandra!" and a moment later, Richardson appeared in the open doorway, staring at them in astonishment. "Abe! Phil! When did you come here?" "About half an hour ago," Snow replied. * * * * * Richardson passed a hand over his eyes. "I must have fallen asleep," he said. "You did, darling, and I couldn't wake you," Sandra said. "So I called Phil." "You couldn't wake me?" "No, and you were talking away in your sleep. You had me worried." "Why?" Sandra, at a loss, looked at Franstein and he answered for her. "You were dreaming, Ham," he said. Richardson thought for a moment before replying. "Now that you mention it, I was. But what's so extraordinary about that? Why are you all looking at me as if I'd suddenly grown horns? "D'you remember what the dream was about?" Franstein asked. "Vaguely. Yes, I do. It was just a dream. Why is it so important?" He sat down in a deep chair and looked around at them. "What is all this?" he said. "I fall asleep for half an hour, have a silly dream, and wake up to find you here looking as if something big has happened." "Something has happened, Ham," said Franstein. "Something we don't understand." Richardson started up in his seat. "Take it easy, there's nothing to worry about. We'll get to the bottom of it." He turned to Snow. "I think I know the way out of this. Play the recording for Ham to hear." Snow hesitated for a moment. "All right, if you think so," he said, and busied himself with the recorder, replacing the used tape on the spool. Sandra perched herself on the arm of her husband's chair and put an arm about his shoulders. They waited while Snow linked up the end of the tape to the other spool. He pressed the _Play_ switch, and presently there came the voices of Snow and Richardson. "That's this afternoon's test," Richardson said. Franstein nodded, and they continued to listen. Then came the chanting sounds, and when he heard them, Richardson's expression changed to one of amazement. Snow switched off the machine. "What was that?" Richardson asked. "We hoped you'd be able to tell us," Franstein replied. "I? What should I know about it?" "That was your voice, Ham. Nobody's touched the tape, and I heard it during the test." "But this is crazy. How could I make a noise like that without knowing anything about it? Why, I remember every second of that test, and I know I didn't do anything like that." He jumped to his feet and began to walk up and down the room, his hands pressed to his head. "I said take it easy, Ham," Franstein said.