The bookkeeper left the station, but Mrs. Klingmayer, who was now quite reassured as to the harmlessness of the police, was asked to remain and to tell what she knew of the private life of the murdered man. Her answers to the various questions put to her proved that she knew very little about her tenant. But this much was learned from her: that he was very close with his money at times, but that again at other times he seemed to have all he wanted to spend. At such times he paid all his debts, and when he stayed home for supper, he would send her out for all sorts of expensive delicacies. These extravagant days seemed to have nothing whatever to do with Winkler’s business pay day, but came at odd times.

Mrs. Klingmayer remembered two separate times when he had received a postal money order. But she did not know from whom the letters came, nor even whether they were sent from the city or from some other town. Winkler received other letters now and then, but his landlady was not of the prying kind, and she had paid very little attention to them.

He seemed to have few friends or even acquaintances. She did not know of any love affair, at least of nothing “regular.” He had remained away over night two or three times during the year that he had been her tenant. This was about all that Mrs. Klingmayer could say, and she returned to her home in a cab furnished her by the kind commissioner.

About two hours later, a police attendant announced that a gentleman would like to see Dr. von Riedan on business concerning the murder in Hietzing. “Friedrich Bormann” was the name on the card.

“Ask him to step in here,” said the commissioner. “And please ask Mr. Muller to join us.”

The good-looking young clerk entered the office bashfully and Muller slipped in behind him, seating himself inconspicuously by the door. At a sign from the commissioner the visitor began. “I am an employee of Braun & Co. I have the desk next to Leopold Winkler, during the year that he has been with us—the year and a quarter to be exact—”

“Ah, then you know him rather well?”

“Why, yes. At least we were together all day, although I never met him outside the office.”

“Then you cannot tell us much about his private life?”

“No, sir, but there was something happened on Monday, and in talking it over with Mr. Braun, he suggested that I should come to you and tell you about it. It wasn’t really very important, and it doesn’t seem as if it could have anything to do with this murder and robbery; still it may be of some use.”