“Can't prove a negative,” Jenkins said.

“Not before this,” Lucas said. “You guys are gonna do it, though, or we're gonna do a gay prostitution sting, and your ass will be on the corner.”

“We get to wear nylons?” Jenkins asked. He didn't threaten well.

Lucas's voice went dark: “I'm not fuckin' around here, man. We had an attempted kidnapping, we got a dead dog, now we got a firebomb.”

“We'll jack them up, no shit,” Jenkins promised. “We're on the case.”

“Flowers is coming up. He'll get in touch.”

Off the phone, Lucas started walking around the neighborhood, checking the houses on each side of the Barths' house, then across the alley in back, and so on, up and down both streets and the houses on the alley. Four houses up from the Barths, and across the alley, he found an elderly man named Stevens.

“I was cooking some Weight Watchers in the microwave, and I saw a car go through the alley,” Stevens said. He was tall, and too thin, balding, with a dark scab at the crest of his head, as if he'd walked into something. They were in the kitchen, and he pointed a trembling hand at the window over the sink, the same arrangement as in the Barths'. “Then, maybe, ten minutes later I was just finished eating, and I took the dish to the trash, and saw more lights in the alley. I didn't see the car, but I think it was the same one. They both had blue headlights.”

“Blue?”

“Not blue-blue, but bluish. Like on German cars. You know, when you look in your rearview mirror on the interstate, and you see a whole bunch of yellow lights, and then, mixed in, some that look blue?”

“Yeah. I've got blue lights myself,” Lucas said.

“Like that,” Stevens said. “Anyway I'd just sat back down again, and I heard the sirens.”

“That was right after you saw the blue headlights.”

“I got up to take the dish to the trash during a commercial,” Stevens said. “Saw the lights, came in, sat back down. The sirens came before there was another commercial.”

“You didn't see what kind of a car it was? The time you actually saw it?”

“Nope. Just getting dark,” Stevens said. “But it was a dark-colored car, black, dark blue, dark green, and I think a sedan. Not a coupe.”

“Not a van.”

“No, no. Not a van. A regular, generic car. Maybe bigger than most. Not a lot bigger, a little bigger. Not an SUV A car.”

“You see many cars back in the alley?” Lucas asked.

“Between five and six o'clock, there are always some, with the garages off the alley.

But not with blue lights. None with blue lights. That's probably why I noticed it.”

That was all he'd seen: he hadn't heard the bomb, the screaming, hadn't heard anything until the sirens came up. He'd been watching Animal Planet.

“Live here alone?” Lucas asked, as he went out.

“Yeah. It sucks.”

Lucas continued walking, found a woman who thought she'd seen a car with bluish lights, but wasn't exactly certain what time. She'd seen it coming out of the alley at least sometime before the sirens, and added nothing to what Stevens said, except to confirm it.

He checked out with the firemen at the Barths'. The arson investigator had shown up, and said he'd have some preliminary ideas in the morning. “But I can tell you, there was gasoline.” He sniffed. “Probably from BP. I'd say, ninety-two octane.”

Lucas frowned and the arson guy grinned: “Pulling your weenie. Talk to you in the morning.”

Lucas got home at midnight and found Weather in bed, reading a book on cottage gardens.

“I think we live in a cottage,” she said.

“Good to know,” he grunted.

“So, I think we should hire a couple of gardeners next year, and get a cottage garden going,” she said. “Maybe a white picket fence.”

“Picket fence would be nice,” he said, grumpily.

She put the book down. “Tell me about it.”

He told her about it, walking back and forth from the bathroom, waving his arms around, getting into his pajamas. He'd brought up a bottle of caffeine-free Diet Coke, with a shot of rum. He sat on the edge of the bed drinking it as he finished, and finally said, “The ultimate problem is, there is no connection between the two cases. But we've got a serious psycho killing people over quilts, and another serious psycho trying to get at the Barths, and they seem to be driving the same van, and goddamnit… I can't find a single fuckin' thing in common between the two cases. There is nothing. The Barths-straight political bullshit. Bucher is a robbery-murder, by people who killed at least one and maybe two other people, and somehow involves quilts.

They've got jack-shit to do with each other.”

He calmed down after a while, and Weather turned out the lights. Lucas usually lay awake in the dark for a while, brooding, even when there wasn't anything to brood about, while Weather dropped off after three deep breaths. This night, she took a half-dozen deep breaths, then lifted her head, said sleepily, “I can think of one thing the cases have in common.”

“What's that?”

“You.” She rolled back over, and went to sleep.

That gave him something to brood about, so he did, for half an hour, coming up with nothing before he drifted away to sleep. At three-fourteen in the morning, his eyes popped open-he knew it was three-fourteen, exactly, because as soon as he woke up, he reached out and touched the alarm clock, and the illuminated green numbers popped up.

The waking state had not been created by an idea, by a concept, by a solution-rather, it had come directly from bladder pressure, courtesy of a late-night twenty-ounce Diet Coke. He navigated through the dark to the bathroom, shut the door, turned on the light, peed, flushed, turned off the light, opened the door, and was halfway across the dark bedroom when another light went on, this one inside his head: “That fuckin' Amity Anderson,” he said aloud.

He lay awake again, thinking about Amity Anderson. She'd worked for Donaldson, lived only a couple of miles from Bucher, and even closer to the Barths. She was an expert on antiques, and must have been working for Donaldson about the time the Armstrong quilt went through.

But the key thing was, she'd heard him talking about the Kline investigation, and he was almost certain that he'd mentioned the Barths' names. At that same time, Ruffe Ignace had published the first Kline story, mentioning Lucas by name. Amity Anderson could have put it all together.

He had, at that point, already hooked the Donaldson killing to Bucher, and he'd told her that. If he had frightened her, if her purpose had been to distract him from Bucher and Donaldson, to push him back at Kline… then she'd almost done it.

He kicked it around for forty-five minutes or so, before slipping off to sleep again.

When he woke, at eight, he was not as sure about Anderson as when he'd gone to sleep.

There were other possibilities, other people who knew he was working both cases.

But Anderson… did she have, or had she ever had, a van? Weather was in the backyard, playing with Sam, who had a toy bulldozer that he was using as a hammer, pounding a stick down into the turf. “He's got great hand-eye coordination,” Weather said, admiring her son's technique. She was wearing gardening gloves, and had what looked like a dead plant in her hand.

“Great,” Lucas said. “By the way, you're a genius. That tip last night could turn out to be something.”

Sam said, “Whack! Whack!”

Lucas told him, “Go get the football.”

Sam looked around, spotted the Nerf football, dropped the bulldozer, and headed for the ball.

“What tip?” Weather asked.

“That I was the common denominator in these cases,” Lucas said.

She looked puzzled. “I said that?”

“Yeah. Just before you went to sleep.”

“I have no memory of it,” she said.

Sam ran up with the ball, stopped three feet from Lucas, and threw it at Lucas's head. Lucas snatched it out of the air and said, “Okay, wide receiver, down, juke, and out.”