The Maze

props."

    "Just the way Marty Bramfort was building props for her kid's school play in Boston. Think about what you had to do to build those props."

    She just stared at him, then leaped to her feet, her hands splayed on his desktop, her chair nearly falling over backward. Her face was alight with excitement. "Goodness, Dillon, he had to buy lumber, but the SFPD said they couldn't trace it, it was too common. But you know a better question: Is it possible to know if the same lumber was used in all the killings, that is, was all the lumber bought in the same place? Okay. He had to screw all those boards together, right? They couldn't trace all the brackets and hinges and screws, but is there any way of knowing if someone screws in a screw differently from someone else? If the slant is different? The amount of force? Is this possible? Can you tell if some lumber matches other lumber from the same yard? The same screws?''

    He grinned at her. "I don't see why not. You've got it now, Sherlock. Now we've got to pray that the San Francisco police haven't thrown away the killer's props from each murder. Actually, I'd be willing to bet they've got it all. They're good.

    "Say they still have everything. Unfortunately MAXINE can't help us here, not even using the most sophisticated visual scanners would work. We've got to have the human touch. I know this guy in Los Angeles who's a genius at looking at the way, for example, a person hammers in a nail. You wondered if this was possible. It is. Not too many people know how to do it, but this guy does. You could show him a half dozen different nails in boards and Wild Ralph could tell you how many different people did the hammering. Now we'll test him about not only hammering nails but screwing in the brackets and hinges. Now go find out if you've still got a match."

    Three days went by. It was hard, but Savich kept his distance. He'd given her Ralph York's number-Wild Ralph-nicknamed ten years before when a suspect in a murder case had tried to kill him for testifying and Ralph had saved himself with a hammer. Unexpectedly, the suspect had survived. He was now serving life in San Quentin. Savich had heard there was still a dent in his head.

    No, he'd keep his mouth shut, at least for another day. To do anything active would be undue interference, and he knew she wouldn't appreciate it. If she had questions, she'd ask, he knew her well enough to know that she didn't have a big ego. He forced himself not to call Wild Ralph to see what was going on. He knew, of course, that the SFPD hadn't done any comparisons of this sort, simply because they'd never had any doubts that all the murders had been committed by the same person. Also, this kind of evidence wasn't yet accepted in a court of law. He found himself worrying. As for Sherlock, she didn't come near him. He knew from the security logs that she had worked until after midnight for the past two nights. He was really beginning to grind his teeth when she knocked on his office door three days later at two o'clock in the afternoon. She just stood in his doorway, saying nothing. He arched an eyebrow, ready to wait her out. She silently handed him a piece of paper.

    It was a letter from Ralph. He read: "Agent Sherlock, the tests I ran included: 1) type of drill used, 2) drilling and hammering technique, 3) type and grade of lumber, and 4) origin of lumber.

    "The drill used in all the San Francisco murders except #4 was identical. However, the drill used in murder #4 was too close in particulars for me to even try to convince the D.A. that it wasn't identical. As to the drilling and hammering technique, it is odd, but I believe some was done by the same person and others were not. They were utterly different. No explanation for that. Perhaps it's as simple as the murderer had hurt his right hand and was having to use his left, or that he was in a different mood, or even that he couldn't see as well in this particular instance The lumber wasn't identical, and it did not come from the Bosman Lumber Mill, South San Francisco. Again, it doesn't really prove anything one way or the other, it is merely of note, although again, I wonder why only murder #4 had lumber from a different lumberyard.

    "This was an interesting comparison. I've spoken to the police in San Francisco. The San Francisco D.A. is speaking with the Boston D.A. They will doubtless have comparisons made between the props used in the San Francisco murders and the props