Lynn Prentiss passed and stopped to stare, raising her eyebrows slightly and then continuing on, as if she did not wish to embarrass a fellow editor in any way. But there had been more than a glimmer of bewilderment in her eyes, as if she found it difficult to picture Ruth Porges scrambling out of an excavation in such haste and in so undignified a manner. What could have prompted her to climb down in the first place? A rendezvous with the foreman of the construction gang? Unthinkable ... if you knew what kind of a girl Ruth Porges was—
Then Tommy Anders, the oldest of the two office boys passed, turning what was probably the sports pages of a morning newspaper, and probably not even seeing her, although he was looking straight in her direction. Then Susan, who had the courtesy not to stare at all, but must have been as startled as Lynn, and just as bewildered.
All she had to do was stand very still with the bag in plain view and everyone who hadn't reached the office a little earlier would know that she'd been behaving in a very strange manner, because there was dust all over her skirt and she was still breathless from her exertions. A half-dozen more Eaton-Lathrup employees would see her and perhaps even Eaton himself. And they'd be sure to notice the bulge in her hand-bag. The awful thought flashed across her mind that the very outlines of the gun might be visible.
And of course it would be all over the office in another half hour, and—he would know. That was the really terrible, frightening thing. Even if he didn't pass and see her, along with the others, he'd be sure to know. At least twenty people would know and he'd be among them. Lathrup's slayer, shaken as he'd failed to be by all the police questioning, although she remembered—now that she thought about it and knew the truth about him—he had paled visibly once and almost betrayed himself. He'd said the wrong thing and had been forced to cover up quickly.
The man who had entered Lathrup's office six days before and shot her dead would know that a girl he couldn't possibly have imagined he'd have any reason to fear had gone down into the excavation where he'd hidden the murder weapon and had found it, and he'd remember that he had once showed it to her, and if she went to the police with it—
Or was she taking too much for granted again, letting her fear completely distort her thinking? He'd have no way of knowing she'd climbed all the way down to the bottom of the excavation. He wasn't stupid, he'd consider the possibility that she'd simply dropped something—as she had—and climbed down a few feet to recover it. A book perhaps, or her lipstick. He might not even give the matter a second thought, even though he knew where he'd hidden the gun, and how dangerous it would be if someone stumbled on it ahead of the steam shovel.
It was all very strange anyway. Why hadn't he gotten rid of the gun in a simpler, safer way—simply tossed it into the river, as she had thought of doing? Or driven out into the country somewhere and tossed it into a lake or buried it? It wasn't as easy to get rid of small objects of a dangerous nature as some people thought—even small phials of poison had a way of turning up again and sending murderers to the gallows. She'd read about such cases often enough. But still—
She suddenly thought she knew why he'd hidden the gun under a stone in the excavation, probably taking care to see that it was buried first pretty deeply. The gun had probably been down there since the day of the murder. He'd had to get rid of it quickly, had to make sure the police wouldn't find it anywhere about the office and trace it to him fast. And as the excavation was only a short distance from the office his hiding it there made sense, was logical enough. He'd probably climbed down during a lull in the construction work, when the pit was deserted, and gambled on the steam shovel scooping the gun up and carrying it off within a fairly short time. Possibly it hadn't even occurred to him it would still be there after six days. Quite possibly it had almost gone into the shovel. Been lifted up, tossed about and reburied. A steam shovel functioned erratically at times and the tumbled, heaved-up look of the earth all around the stone made that guess—of course it was only a guess—seem quite plausible to her.
It had probably continued to worry him, kept him anxious, robbed him of sleep—if a man with blood on his hands could ever not be robbed at times of sleep. But even a nightmare kind of anxiety was better than immediate apprehension by the police. If he'd climbed down into the excavation again later, to make sure that the gun had gone into the scoop and been caught with the weapon in his hands or even just searching for a weapon that had vanished he'd be taking the same kind of risk a murderer with a psychopathic streak does when he returns to the scene of his crime in the grip of a morbid compulsion.
She'd just taken, all unwittingly, the same kind of risk herself but she was quite sure the police wouldn't suspect her, and if they did she'd have no trouble in clearing herself. Only the killer would suspect her—of knowing precisely who he was.