He said, “You entered the discussion at the end.”

“So I did, Partner Elijah, but only because by that time I had independent evidence bearing out Agent Gruer’s suspicions.”

“What kind of independent evidence?”

“That which could be deduced from Mrs. Delmarre’s own behavior.”

“Let’s be specific, Daneel.”

“Consider that if the lady were guilty and were attempting to prove herself innocent, it would be useful to her to have the detective in the case believe her innocent.”

“Well?”

“If she could warp his judgment by playing upon a weakness of his, she might do so, might she not?”

“Strictly hypothetical.”

“Not at all,” was the calm reply. “You will have noticed, I think, that she concentrated her attention entirely on you.”

“I was doing the talking,” said Baley.

“Her attention was on you from the start; even before she could guess that you would be doing the talking. In fact, one might have thought she would, logically, have expected that I, as an Auroran, would take the lead in the investigation. Yet she concentrated on you.”

“And what do you deduce from this?”

“That it was upon you, Partner Elijah, that she pinned her hopes. You were the Earthman.”

“What of that?”

“She had studied Earth. She implied that more than once. She knew what I was talking about when I asked her to blank out the outer daylight at the very start of the interview. She did not act surprised or uncomprehending, as she would most certainly have done had she not had actual knowledge of conditions on Earth.”

“Well?”

“Since she has studied Earth, it is quite reasonable to suppose that she discovered one weakness Earthmen possess. She must know of the nudity tabu, and of how such a display must impress an Earthman.”

“She—she explained about viewing—”

“So she did. Yet did it seem entirely convincing to you? Twice she allowed herself to be seen in what you would consider a state of improper clothing—”

“Your conclusion,” said Baley, “is that she was trying to seduce me. Is that it?”

“Seduce you away from your professional impersonality. So it would seem to me. And though I cannot share human reactions to stimuli, I would judge, from what has been imprinted on my instruction circuits, that the lady meets any reasonable standard of physical attractiveness. From your behavior, moreover, it seems to me that you were aware of that and that you approved her appearance. I would even judge that Mrs. Delmarre acted rightly in thinking her mode of behavior would predispose you in her favor.”

“Look,” said Baley uncomfortably, “regardless of what effect she might have had on me, I am still an officer of the law in full possession of my sense of professional ethics. Get that straight. Now let’s see the report.”

Baley read through the report in silence. He finished, turned back, and read it through a second time.

“This brings in a new item,” he said. “The robot.”

Daneel Olivaw nodded.

Baley said thoughtfully, “She didn’t mention it.”

Daneel said, “You asked the wrong question. You asked if he was alone when she found the body. You asked if anyone else had been present at the death scene. A robot isn’t ‘anybody else.”

Baley nodded. If he himself were a suspect and were asked who else had been at the scene of a crime, he would scarcely have replied: “No one but this table.”

He said, “I suppose I should have asked if any robots were present?” (Damn it, what questions does one ask anyway on a strange world?) He said, “How legal is robotic evidence, Daneel?”

“What do you mean?”

“Can a robot bear witness on Solaria? Can it give evidence?”

“Why should you doubt it?”

“A robot isn’t human, Daneel. On Earth, it cannot be a legal witness.”

“And yet a footprint can, Partner Elijah, although that is much

less a human than a robot is. The position of your planet in this respect is illogical. On Solaria, robotic evidence, when competent, is admissible.”

Baley did not argue the point. He rested his chin on the knuckles of one hand and went over this matter of the robot in his mind.

In the extremity of terror Gladia Delmarre, standing over her husband’s body, had summoned robots. By the time they came she was unconscious.

The robots reported having found her there together with the dead body. And something else was present as well; a robot. That robot had not been summoned; it was already there. It was not one of the regular staff. No other robot had seen it before or knew its function or assignment.

Nor could anything be discovered from the robot in question. It was not in working order. When found, its motions were disorganized and so, apparently, was the functioning of its positronic brain. It could give none of the proper responses, either verbal or mechanical, and after exhaustive investigation by a robotics expert it was declared a total loss.

Its only activity that had any trace of organization was its constant repetition of “You’re going to kill me—you’re going to kill me—you’re going to kill me.”

No weapon that could possibly have been used to crush the dead man’s skull was located.

Baley said suddenly, “I’m going to eat, Daneel, and then we see Agent Gruer again—or view him, anyway.”

Hannis Gruer was still eating when contact was established. He ate slowly, choosing each mouthful carefully from a variety of dishes, peering at each anxiously as though searching for some hidden combination he would find most satisfactory.

Baley thought: He may be a couple of centuries old. Eating may be getting dull for him.

Gruer said, “I greet you, gentlemen. You received our report, I believe.” His bald head glistened, as he leaned across the table to reach a titbit.

“Yes. We have spent an interesting session with Mrs. Delmarre also,” said Baley.

“Good, good,” said Gruer. “And to what conclusion, if any, did you come?”

Baley said, “That she is innocent, sir.”

Gruer looked up sharply. “Really?”

Baley nodded.

Gruer said, “And yet she was the only one who could see him, the only one who could possibly be within reach… .”

Baley said, “That’s been made clear to me, and no matter how firm social customs are on Solaria, the point is not conclusive. May I explain?”

Gruer had returned to his dinner. “Of course.”

“Murder rests on three legs,” said Baley, “each equally important. They are motive, means, and opportunity. For a good case against any suspect, each of the three must be satisfied. Now I grant you that Mrs. Delmarre had the opportunity. As for the motive, I’ve heard of none.”

Gruer shrugged. “We know of none.” For a moment his eyes drifted to the silent Daneel.

“All right. The suspect has no known motive, but perhaps she’s a pathological killer. We can let the matter ride for a while, and continue. She is in his laboratory with him and there’s some reason why she wants to kill him. She waves some club or other heavy object threateningly. It takes him a while to realize that his wife really intends to hurt him. He shouts in dismay, ‘You’re going to kill me,’ and so she does. He turns to run as the blow descends and it crushes the back of his head. Did a doctor examine the body, by the way?”

“Yes and no. The robots called a doctor to attend Mrs. Delmarre and, as a matter of course, he looked at the dead body, too.”

“That wasn’t mentioned in the report.”

“It was scarcely pertinent. The man was dead. In fact, by the time the doctor could view the body, it had been stripped, washed, and prepared for cremation in the usual manner.”

“In other words, the robots had destroyed evidence,” said Baley, annoyed. Then: “Did you say he viewed the body? He didn’t see it?”

“Great Space,” said Gruer, “what a morbid notion. He viewed it, of course, from all necessary angles and at close focus, I’m sure. Doctors can’t avoid seeing patients under some conditions, but I can’t conceive of any reason why they should have to see corpses. Medicine is a dirty job, but even doctors draw the line somewhere.”