“So he was called to a rendezvous in Hietzing, too,” murmured Muller, then he added after a few moments: “But this rendezvous had nothing whatever to do with love.”
There was nothing else in Winkler’s room which could be of any value to Muller in the problem that was now before him. And yet he was very well satisfied with the result of his errand.
He entered his cab again, ordering the driver to take him to Hietzing. Just before he had reached the corner where he had told the man to stop, another cab passed them, a coupe, in which was a solitary woman. Muller had just time enough to recognise this woman as Adele Bernauer, and to see that she looked even more haggard and miserable than she had that morning. She did not look up as the other cab passed her carriage, therefore she did not see Muller. The detective looked at his watch and saw that it was almost half-past four. The unexpected meeting changed his plans for the afternoon. He had decided that he must enter the Thorne mansion again that very day, for he must find out the meaning of the red-shaded lamp. And now that the housekeeper was away it would be easier for him to get into the house, therefore it must be done at once. His excuse was all ready, for he had been weighing possibilities. He dismissed his cab a block from his own home and entered his house cautiously.
Muller’s lodgings consisted of two large rooms, really much too large for a lone man who was at home so little. But Muller had engaged them at first sight, for the apartment possessed one qualification which was absolutely necessary for him. Its situation and the arrangement of its doors made it possible for him to enter and leave his rooms without being seen either by his own landlady or by the other lodgers in the house. The little apartment was on the ground floor, and Muller’s own rooms had a separate entrance opening on to the main corridor almost immediately behind the door. Nine times out of ten, he could come and go without being seen by any one in the house. To-day was the first time, however, that Muller had had occasion to try this particular qualification of his new lodgings.
He opened the street door and slipped into his own room without having seen or been seen by any one.
Fifteen minutes later he left the apartment again, but left it such a changed man that nobody who had seen him go in would have recognised him. Before he came out, however, he looked about carefully to see whether there was any one in sight He came out unseen and was just closing the main door behind him, when he met the janitress.
“Were you looking for anybody in the house?” said the woman, glancing sharply at the stranger, who answered in a slightly veiled voice: “No, I made a mistake in the number. The place I am looking for is two houses further down.”
He walked down the street and the woman looked after him until she saw him turn into the doorway of the second house. Then she went into her own rooms. The house Muller entered happened to be a corner house with an entrance on the other street, through which the detective passed and went on his way. He was quite satisfied with the security of his disguise, for the woman who knew him well had not recognised him at all. If his own janitress did not know him, the people in the Thorne house would never imagine it was he.
And indeed Muller was entirely changed. In actuality small and thin, with sparse brown hair and smooth shaven face, he was now an inch or two taller and very much stouter. He wore thick curly blond hair, a little pointed blond beard and moustache. His eyes were hidden by heavy-rimmed spectacles.
It was just half-past five when he rang the bell at the entrance gate to the Thorne property. He had spent the intervening time in the cafe, as he was in no hurry to enter the house. Franz came down the path and opened the door. “‘What do you want?” he asked.