The man came out, carefully closing the door after him, and, coming down the steps, stopped a moment on the sidewalk, where the light from the arc lamp fell full on his face. “Brown-bearded and brown-haired,” remarked Nick, in a whisper. The man under watch finally turned and walked off toward the lower corner. Chick slipped out and across the street, directly in his rear. He did not attempt to follow the man, but watched him walk away. Then he slipped back to Nick on his tiptoes, saying, eagerly: “By thunder, chief, that man walks with a hitch and jerk of his right shoulder.” “I thought I saw that myself,” replied Nick. “Under other circumstances we’d follow that man, but now our business is to find Ida.” As a matter of fact, they did follow the man, but only because their ways were the same. At the corner below they saw this man pass through a door, which Nick and Chick sized up to be the back door of a drinking saloon. They let him go, and Nick led the way to the house of the woman on whom Ida had first called. This was not guesswork. He recalled that he had advised Ida to see that woman immediately on arriving in Philadelphia. It was with some difficulty that the woman was aroused, and when she was, her means of communication with them was through the window of her bedroom. It did not take long for Nick to learn that Ida had called on her, and that she did not know whither Ida had gone on leaving her. “The first point is made,” said Nick to Chick, “for we have found that Ida reached here and began work. Now we will follow her up.” Taking a position under the arc light near by, Nick took from his pocket some papers, and, after examining them, said: “I fancy we can travel Ida’s course pretty straight for a while. Come along.” Thus, without delay, they called at each of the next three places Ida had gone to, and in the order that she had, compelled in each instance to arouse people from their beds to answer their questions. But at the end of this journey they were, to use the words of Chick, “up against it.” What line Ida had traveled, and to what address she had gone, they had no way of judging. Although Nick had given her the name of a person to call on, he was unable to tell where that person lived, and had advised Ida that she would have to find out on her arrival in the city. He could only tell that it was in a certain neighborhood, information which he had obtained from Blanche Constant after the murder. However, assuming that this was her next direction, they went thither in what Chick felt to be a rather hopeless search. Reaching that part of the town, they traveled the streets in all directions without hitting upon any indications of Ida’s tracks. Coming to one corner, which they had passed several times. Nick said: “Here’s a street that we have not been over yet; let’s try it.”