'Yet, for all the clues, you don't really know who the killer is.
Wil smiled. 'That's right, Della. If I did, it would have been the first thing I said.'
'You would have been safer to keep quiet, then, till you had her whole message figured out.'
He shook his head. 'Unfortunately, Marta could never risk putting solid information in her diary. There's nothing in any of the four cairns that will tell us the killer's name.'
'So you've told us this just to raise our blood pressure? If she could communicate all you say, she sure as hell would tell us the enemy's name.' Yelen was clearly recovering.
'She did, but not in any of the four cairns. She knew those would be 'inspected' before you ever saw them; only the subtlest clues would escape detection. What I've discovered is that there's a
'Even if you're right, that's fifty thousand years ago now. Whatever she left would be completely destroyed.'
Wil put on his most sober expression. 'I know that, Yelen, and Marta must have known it could be that long, too. I think she took that into account.'
'So you know where it is, Wil?'
'Yes. At least to within a few kilometers. I don't want to say exactly where; I assume we have a silent partner in this conversation.'
Della shrugged. 'It's conceivable the enemy doesn't have direct bugs. He may have access only when certain tasks are executing.'
'In any case, I suggest you keep a close watch on the airspace above all the places Marta visited. The murderer may have some guesses of his own now. We don't want to be scooped.'
There was silence as Della and Yelen retreated into their systems. Then: 'Okay, Brierson. We're set. We have heavy monitoring of the south shore, the pass Marta used through the Alps, and the whole area around Peacer Lake. I've given Della observer status on my system. She'll be running critical subsystems in parallel. If anybody starts playing games there, she should notice.
'Now. The important thing. Della is bringing in fighters from the Lagrange zones. I have a fleet I've been keeping in stasis; its next lookabout is in three hours. All together that should be enough to face down any opposition when we go treasure hunting. All you have to do is lie low for another three hours. Then tell us the cairn's location and we'll —'
Wil held up a hand. 'Yes. Get your guns. But I'm going along.'
'What? Okay, okay. You can come along.'
'And I don't want to leave till tomorrow morning. I need a few more hours with the diary; some final things to check out.'
Yelen opened her mouth, but no sound came. Della was more articulate. 'Wil. Surely
'There are things I have to figure first. Tomorrow morning. It's the fastest I can make it. I'm sorry, Della.'
Yelen muttered an obscenity and cut her connection. Even Della seemed startled by the abruptness of her departure. She looked back at Wil. 'She's still cooperating, but she's mad as hell.... Okay. So we wait till tomorrow. But believe me, Wil. An active defense is expensive. Yelen and I are willing to spend most of what we have to get the killer, but waiting till tomorrow cuts the protection per unit time.... It would help if you could say how long things might drag out beyond that.'
He pretended to think on the question. 'We'll have the secret diary by tomorrow afternoon. If things don't blow up by then, I doubt they ever will.'
'I'll be going, then.' She paused. 'You know, Wil, once upon a time I was a government cop. I think I was pretty good at power games. So. Advice from an old pro: Don't get in over your head.'
Brierson summoned his most confident, professional look. 'Everything will work out, Della.'
After Della signed off, Wil went into the kitchen. He started to mix himself a drink, realized he had no business drinking just now, and scarfed some cake instead.
The afternoon was clear, dry. He could hear dry rustling in the trees. Only a short stretch of road was visible. All the greenery didn't leave much to see. The only nice views were from the second floor. Still, he was getting fond of the place. It was a bit like the lower-class digs he and Virginia had started in.
He leaned out the window, looked straight up. The two autons were floating lower than usual. Farther up, almost lost in the haze, was something