astrogator's chair and waited while Lefler made the position readings. Then Lefler swung his chair around to face Robwood. "I want to check some things with you, Robwood," he said. "I've listened to your report and Taat's and I've seen a film of Taat's that seems to give you both an alibi. After Makki relieved you and you ate lunch, was suppertime the only time you came back into the personnel sphere?" "That's right," said Robwood. "Taat and I played cards a while after lunch, but I think you were awake then." "How long did your supper period last?" "Oh, half an hour. Maybe a little longer. You were asleep and snoring." Lefler shook his head savagely. "Robwood, I'm afraid you're going to have to take over the ship. I want you to put me in irons and turn me over for Makki's murder when we get to Marsport." Robwood started so violently he almost broke his retaining straps. He stared at Lefler for a full thirty seconds before he found his voice. "You're not serious!" he exclaimed. There was a pleading note to his tone. "Lefler, you didn't shoot him, did you?" "I must have, Robwood. But not consciously. I've been able at last to remember a nightmare I had just before I found Makki's body. "Makki and I were boys together, and he was just as mean and evil then as he was when he grew up. I was dreaming about the time Makki smashed my toy electric train and laughed about it. I tried to kill him then. I beat him with the semaphore and cut his face all up before he knocked me down and kicked me half senseless. I lived through that experience again in my dream. "My bunk straps were loose when I woke up. I must have acted that dream out in a semi-conscious state. I must have gone up to the control room, tackled Makki and finally shot him." "That's the silliest thing I ever heard of," retorted Robwood. "It must be true, Robwood. Neither you nor Taat could have killed him, and Taat's got the film to prove it." Robwood unstrapped himself and pushed himself to the companionway with some determination. "Well, I'm not going to take over the ship and I'm not going to put you in irons," he said spiritedly. "I