Knoll’s eyes dropped again and he did not trust himself to speak.
“Well, you do not deny this statement?”
“No, I can’t,” said Knoll, still trying to control his voice. “You must have the watch yourself now, or else you wouldn’t be so certain about it.”
“Ah, you see, I thought you’d had experience with police courts before,” said the commissioner amiably. “Of course I have the watch already. The man whom you sold it to this morning knew by three o’clock this afternoon where this watch came from. He brought it here at once and gave us your description. A very exact description. The man will be brought here to identify you to-morrow. We must send for him anyway, to return his money to him. He paid you fifty-two gulden for the watch. And how much money was in the purse that you took from the murdered man?”
“Three gulden eighty-five.”
“That was a very small sum for which to commit a murder.”
Knoll groaned and bit his lips until they bled.
Commissioner von Riedau raised the paper that covered the watch and continued: “You presumably recognised that the chain on which this watch hung was valueless, also that it could easily be recognised. Did you throw it away, or have you it still?”
“I threw it in the river.”
“That will not make any difference. We do not need the chain, we have quite enough evidence without it. The purse, for instance: you thought, I suppose, that it was just a purse like a thousand others, but it is not. This purse is absolutely individual and easily recognised, because it is mended in one spot with yellow thread. The thread has become loosened and hangs down in a very noticeable manner. It was this yellow thread on the purse, which he happened to see by chance, that showed the dealer Goldstamm who it was that had entered his store.”