He might have remained in this state indefinitely had not Keane's fears withdrawn his mind from his immediate surroundings. Momentarily he forgot Quest, Philip--everything but himself and his predicament. And in the instant that his vigilance relaxed, Quest's enslaved will experienced a sudden lease of strength and hope. Independently of his Control, he found that he could move Philip's hand, could take a faltering step. But now, what to do? How might he fan this feeble spark of volition to sufficient strength for decisive resistance? The idea came to him: if only he could place distance between himself and Keane, perhaps with one titanic effort he might launch himself against the Master Will, take him by surprise, crush him down, and reverse him to the status of Agent instead of Control. With infinite effort Quest forced Philip's body step by step across the room. He must reach that window, get a signal of distress to someone in the street. But Keane began to sense a mutiny. He followed. He crossed the floor with slinking, tigerish steps and snaking body. His wet lips writhed back over his teeth, and his contorted features wove the leer of the abyss. Now as his Control drew physically near, Quest felt his mite of strength ebbing fast. Slowly Keane reached up with his clawed fingers and grasped his Agent by the arm. "Remember!" he hissed, "if these deaths are traced to us, you break down--you confess--you take the blame--you paint me lily white--you describe the cowardly means by which you moulded me to your will--you plead only for a quick trial and the full penalty of the law. You understand?" Quest made no reply, but he understood all too well the hideous intention of his betrayer. What a fool he had been to imagine that Keane Clason would ever restore him to his body! Philip to the chair, Quest a homeless spirit wandering in space, and for the body at the bottom of the tank, the brief regrets of the Department! * * * * * A sudden rushing sound filled the air with a sense of action and alarm. Two--three--four speeding automobiles swung in recklessly to the curb and shrieked to a standstill under smoking brakes. Men leaped out and deployed on the run to surround the factory. Keane darted to the door and twisted the key. "Come on!" he spat at Philip as he snatched back the rug and threw open the trap door. The command galvanized Quest to action. In two bounds he had Philip on the stairs. A heavy impact rattled the office door just as he dropped the trap into place over his head. Then, infected with Keane's panic, he was running down the passageway like mad. Inside the tank chamber the brilliantly colored rings of liquid flashed back the rays of the arclight. Half crazed with anxiety, Keane danced on the black ledge like a monkey on a griddle. His face was ashen, drool ran from his twisted mouth, his eyes were two black pools of terror.