“He has no idea that he is suspected.”

“But—you’ll promise to be sensible this time, Muller?”

“Yes. But you will pardon me my present reticence, even towards you? I—I don’t want to be thought a dreamer again.”

“As in the Kniepp case?”

“As in the Kniepp case,” repeated the little man with a strange smile. “So please allow me to go about it in my own way. I will tell you all you want to know to-morrow.”

“To-morrow, then.”

“May I now continue to unfold my theories?” Bauer nodded and Muller continued: “The criminal wanted Fellner’s blood, no matter how.”

“Even if it meant murder,” said Bauer.

Muller nodded calmly. “It would have been nobler, perhaps, to have warned his victim of his approach, but it might have all come to nothing then. The other could have called for help, could have barricaded himself in his room, one crime might have been prevented, and another, more shameful one, would have gone unavenged.”

“Another crime? Fellner a criminal?”