"Yes. You saw how jealous he is of his job on this ship. If the Thomasson Equations were used, he would certainly be put out of work. To a man like that, it would be worse than death. And remember, he has not been in this room since we asked Oscar to point out the killer."
"You might be right," said Horitz slowly. "But even if Oscar put the finger on him, it wouldn't prove anything unless we can find out what Oscar means."
"Please try it," said the girl. "I have—I have a theory."
"Yes," said Horitz.
She flushed slowly. "I know it sounds absurd," she said, "but I think Oscar has been pointing out all the ones on this ship who could have killed Professor Thomasson—who had reasons to. I think he perceives that, just as we'd perceive a man's height, or his manner of walking."
Horitz looked at her doubtfully.
"Don't you see," she went on, "that would explain why he pointed out two when we asked for only one? They look the same to him—he can't tell them apart!"
"Maybe you've got it," said Horitz. He opened the transceiver and said, "Captain Tooker, please. Horitz calling."
"Yes, Horitz?" said the captain's voice.
"Can you come down immediately? I think we've got this thing licked."