residential street near the outskirts of town. At two in the afternoon hardly anyone was visible on the sidewalks and only an occasional automobile passed. Kirk parked his car half a block further on down and got out into the chill November air. He entered the building foyer and looked at the name plates above the twin rows of buttons. The one for Alma Dakin told him the number of her apartment was 3C. He pushed the button several times but without response. The foyer was very quiet at this time of day, and he could hear the faint rasp of her bell through the speaking tube. Kirk was on the point of shifting his thumb to the button marked SUPERINTENDENT when a sudden thought stayed his hand. It was not the kind of thought a conscientious, rule-abiding police officer would harbor for a moment. The lieutenant, however, was fully aware he had no business working on a closed case to begin with—and when you're breaking one set of rules, you might as well break them all. He rang four of the other bells before the lock on the inner door began to click. Pushing it open, he waited until a female voice floated down the stairs. "Who is it?" "Police Department, ma'am. You folks own that green Buick parked out in front?" There was no Buick, green or otherwise, along the street curbing, but Kirk figured she wouldn't know that. "Why, no. Officer. I can't imagine—" "Okay. Sorry we bothered you, lady," Kirk let the door swing into place hard enough to be heard upstairs. But this time he was on the right side of it. There was a moment of silence, then he caught the sound of retreating feet and a door closed. Without waiting further, the Lieutenant mounted the stairs to the third floor, his feet soundless on the carpeted treads. The entrance to 3C was secured by a tumbler-type lock. From an inner pocket Kirk took out a small flat leather case and a thin-edged tool from that. Working with the smooth efficiency of the expert, he loosened the door moulding near the lock and inserted the tool blade until it found the bolt. This he eased back, turned the door handle and, a moment later, was standing in a small living room tastefully furnished in modern woods. His first action was to enter the tiny kitchen and unbolt the door leading to the rear porch. In case Alma Dakin arrived at an inopportune moment, he could be half way down the outer steps while she was still engaged