at least."
"Are you questioning me?"
"I'll answer for you, too. You were in the Williamsburg power plant."
The Commissioner rose from his seat. His forehead glistened and there were dry, white flecks at the corners of his lips. "What the hell are you trying to say?"
"Weren't you?"
"Baley, you're suspended. Hand me your credentials."
"Not yet. Hear me out."
"I don't intend to. You're guilty. You're guilty as the devil, and what gets me is your cheap attempt to make me, me, look as though I were conspiring against you." He lost his voice momentarily in a squeak of indignation. He managed to gasp out, "In fact, you're under arrest."
"No," said Baley, tightly, "not yet. Commissioner, I've got a blaster on you. It's pointed straight and it's cocked. Don't fool with me, please, because I'm desperate and I will have my say. Afterward, you can do what you please."
With widening eyes, Julius Enderby stared at the wicked muzzle in Baley's hands.
He stammered, "Twenty years for this, Baley, in the deepest prison level in the City."
R. Daneel moved suddenly. His hand clamped down on Baley's wrist. He said, quietly, "I cannot permit this, partner Elijah. You must do no harm to the Commissioner."
For the first time since R. Daneel had entered the City, the Commissioner spoke directly to him. "Hold him, you. First Law!"
Baley said quickly, "I have no intention of hurting him, Daneel, if you will keep him from arresting me. You said you would help me clear this up. I have forty-five minutes."
R. Daneel, without releasing Baley's wrist, said, "Commissioner, I believe Elijah should be allowed to speak. I am in communication with Dr. Fastolfe at this moment - "
"How? How?" demanded the Commissioner, wildly.
"I possess a self-contained subethenic unit," said R. Daneel. The Commissioner stared.
"I am in communication with Dr. Fastolfe," the robot went on inexorably, "and it would make a bad impression, Commissioner, if you were to refuse to listen to Elijah. Damaging inferences might be drawn."
The Commissioner fell back in his chair, quite speechless. Baley said, "I say you were in the Williamsburg power plant today, Commissioner, and you got the alpha-sprayer and gave it to R. Sammy. You deliberately chose the Williamsburg power plant in order to incriminate me. You even seized Dr. Gerrigel's reappearance to invite him down to the Department and give him a deliberately maladjusted guide rod to lead him to the photographic supply room and allow him to find R. Sammy's remains. You counted on him to make a correct diagnosis."
Baley put away his blaster. "If you want to have me arrested now, go ahead, but Spacetown won't take that for an answer."
"Motive," spluttered Enderby breathlessly. His glasses were fogged and he removed them, looking once again curiously vague and helpless in their absence. "What motive could I have for this?"
"You got me into trouble, didn't you? It will put a spoke in the Sarton investigation, won't it? And all that aside, R. Sammy knew too much."
"About what, in Heaven's name?"
"About the way in which a Spacer was murdered five and a half days ago. You see, Commissioner, you murdered Dr. Sarton of Spacetown."
It was R. Daneel who spoke. Enderby could only clutch feverishly at his hair and shake his head.
The robot said, "Partner Elijah, I am afraid that this theory is quite untenable. As you know, it is impossible for Commissioner Enderby to have murdered Dr. Sarton."
"Listen, then. Listen to me. Enderby begged me to take the case, not any of the men who over-ranked me. He did that for several reasons. In the first place, we were college friends and he thought he could count on its never occurring to me that an old buddy and respected superior could be a criminal. He counted on my well-known loyalty, you see. Secondly, he knew Jessie was a member of an underground organization and expected to be able to maneuver me out of the investigation or blackmail me into silence if I got too close to the truth. And he wasn't really worried about that. At the very beginning he did his best to arouse my distrust of you, Daneel, and make certain that the two of us worked at cross-purposes. He knew about my father's declassification. He could guess how I would react. You see, it is an advantage for the murderer to be in charge of the murder investigation."
The Commissioner found his voice. He said, weakly, "How could I know about Jessie?" He turned to the robot. "You! If you're transmitting this to Spacetown,