That was another grim possibility not unknown in space annals. Bacteria could mutate rapidly and strangely under extra-planetary conditions. On two or three occasions, "fancy" ones had nearly wiped out orbital laboratories devoted to bacteriological research. If such were the case here, it was all the more important to see what could be done to avoid tainting the atmosphere of an inhabited planet. * * * * * In the air lock, the pressure balanced quickly with that of the interior, and the tension eased on the fabric of their suits. Stokely pushed the inner hatch open and they entered with guns drawn. The beams of their flashlights swept the chamber quickly, then more slowly. There were only the bunks, storage lockers, air-processing equipment, and gyro-stabilizer unit to be expected amidships of such a craft. Stokely placed a hand on the stabilizer housing for a moment, then nodded. They had already judged from the ship's behavior that it must be functioning. "Nothing out of the way here," reported Stokely in a low voice. "Stay together, and look at the control room first," Captain Rogan ordered. There was, of course, no central lift in a ship this size, but merely narrow ladders between the compartments. These were necessary only under the pull of gravity or acceleration, and under the present circumstances, to be avoided. Stokely led the way "up" the inner hull and across the "overhead," placing his magnetized boots as softly as possible. The inter compartment hatch, about three feet in diameter, was wide open. Stokely pointed at Archer's flashlight and made a fanlike motion with his hands. Archer nodded, reached out and aimed the light through the hole, full flood, while Stokely peered through the other side, gun in hand. The stratagem was simple--anyone firing at the light might hit Archer's arm, but probably not Stokely's less expendable head. Nothing happened. After a tense moment, Archer moved the light about slowly, then Stokely turned his own over the edge. "There are two men in there," he said slowly. "Both dead, I think." * * * * * There was no doubt at all about one of them, whose corpse floated not six feet away, tied by one wrist to a conduit. Part of the face seemed to have been gouged out, and closer inspection showed the explanation: a sizable bullet-hole in the opposite temple. Whether or not the other was dead, he was certainly not conscious, despite his normal sitting posture in the control chair. That was to be expected anyhow, in a free fall with the safety belt fastened. His squat frame was stripped to the waist, his small black eyes stared blindly, and his unshaven jaw was clenched in an ugly grin. His right hand loosely held a hypodermic syringe, and a pistol was stuck in his belt. Stokely gave a brief description, and added: "He looks dead, all right. Maybe he tried to give himself an anti-tetanus injection, but was too late."