“Grammar aside,” Abbott said, “what are we dealing with?”

“A group of environmental activists we believed had disbanded,” Barlow said. “They were at their most active in the early nineties. SPOT operated on the leaderless resistance model-small cells that allegedly have no lateral connection to one another or vertical connection to a ‘boss.’ They targeted commercial development of wildlife habitats, like the wetlands bordered by last night’s condo.”

Abbott had leaned forward, chin on his folded hands. “M.O.?”

“Usually smart,” Barlow said. “They used electronic timers to start their fires and always left behind a glass globe paperweight, but not covered in any gel. They’d wrap it in fire-resistant fabrics, usually pieces of firefighters’ protective gear, coats, et cetera.”

“They wanted it found,” Olivia murmured. “Intact.”

“Absolutely,” Barlow said, brows crunched. “But they always, always contacted the local news minutes after the firefighters were called to the scene.”

“They didn’t this time,” Kane said. “Why?”

Barlow shook his head. “I don’t know. They also never used guns.”

“Was this a smart fire?” Olivia asked.

“Aspects were. Like shutting down the camera systems and shutting off the water to the sprinklers. That took planning. They also had access to the guard’s schedule and they knew to open all the fire doors. If the girl tried to get out via the stairwell, she would have been stopped by the smoke and the heat. But in other ways they were stupid. They used the carpet adhesive, which is incredibly flammable. The fire would have spread quickly. It’s a wonder they made it out alive. Their M.O. last night wasn’t consistent with their M.O. before.”

“What are you saying?” Olivia asked. “They’ve reopened under new management?”

Barlow lifted a shoulder. “Maybe. Or maybe it’s a front. If someone knew about SPOT and wanted to deflect attention from their real motive, they could leave the globe behind and have us chasing our tails.”

“Or that could be wishful thinking and they really are ecoterrorists,” Kane said.

“Meaning, we call in the Feds,” Abbott said flatly.

Olivia’s jaw tightened. “I had to tell Henry Weems’s widow that he wasn’t ever coming home again. Weems was MPD, one of ours. So whoever shot him is ours, too.”

“I agree,” Abbott said grimly. “For now, we call the Feds, just to check on anything new they might have on this group. If these are eco-nuts, I don’t want my ass on the line for sitting on information. But if these SPOT assholes claim responsibility, we will bring the Feds in. No arguments.”

He was right, Olivia knew, just as she knew she was being emotional. “No arguments. Besides, the differences far outweigh the similarities.”

Barlow was frowning. “Maybe not. There is one other similarity. In their last arson twelve years ago, a woman died. Nobody was supposed to be in the building, but this woman was working late and had fallen asleep at her desk. After that, the group went dormant. It was assumed they’d gone their separate ways.”

“That was SPOT?” Abbott asked. “I remember that fire now.”

“That’s a disturbing coincidence,” Jess Donahue said. “If they knew this girl was in the condo last night and set the fire anyway… that’s a whole different ball game.”

“Find them first, then find out what they knew and when,” Abbott said, then turned to Barlow. “Leaderless resistance groups often have a symbolic leader. Did SPOT?”

“Yeah, but I think I’m too tired to think of his name now.”

“Preston Moss,” Micki supplied. “I pulled a few articles from Google. Moss grew up here, in the Twin Cities, but during the nineties was a professor in some private college in Oregon. He authored a few books on preserving forest habitats. His first few books were more mainstream, but he got more radical. He’s believed to have founded SPOT-with appropriate Latin grammar, Dr. Donahue. His followers bastardized the name as they formed their own cells across the northwest and east into Wisconsin. Later he came back to teach in Minnesota. The wetlands were one of his causes, and Moss was believed to have been directly involved in that last fire. He dropped out of sight after the woman’s death and hasn’t been seen again.”

Barlow smiled, but wearily. “You did your homework. Anything else I forgot?”

“No, you covered it,” Micki said kindly. “You have a good memory.”

“How did you remember this, Sergeant?” Donahue asked. “This SPOT group was active before you joined the force.”

Olivia shot a quick look at the shrink, impressed and wary at the same time. That Donahue had known Barlow was on the case and had already checked his personnel file seemed to have floated over the man’s head, because he replied without a blink.

“During one of my training classes, we had speakers from the FBI and ATF. One of the FBI guys had been chasing Preston Moss for years. Kind of his great white whale, if you know what I mean. Seemed a little too intense for my liking, but he may have more information that isn’t in the files. His name is Special Agent Angus Crawford, and then he was with the Minneapolis field office.”

“I’ll give him a call,” Abbott said. “Barlow, do you have enough resources? Should we call the Feds in for support?”

“I’m good for now. We’ve got MFD fire investigators on the scene, and I got some help from one of the firefighters.” Barlow slid a look at Olivia. “The one who found the girl-David Hunter. He’s got a good eye.”

Olivia felt her cheeks heat. David’s eyes weren’t the only things that were good, she thought as Paige’s words came back to taunt her. Focus. She looked Barlow in the eye. “What did you find?” she asked, relieved her voice was professionally brisk.

“Hunter and Zell found a backpack in the debris on the first floor, just before I left to come here,” Barlow said. “The backpack was mostly burned. It may have been on the fourth floor when it collapsed and fell through, landing on the first floor before the fire was completely out. Some of the contents had fallen out and melted.” He produced a camera, turned it on, and passed it to Olivia so that she could view the digital display. “Haven’t had time to print my photos. We found this a few feet away.”

In the screen was a black case that looked like it should have held eyeglasses, but it didn’t. What it did hold, she couldn’t tell, as the contents were misshapen. “What is it?”

“A hearing aid,” Barlow said. “Hunter ID’d it. That pink part is the earpiece. I’m assuming it belonged to the girl.”

“If it does, it narrows the search for her a good bit.” Olivia put the photo of the dead girl on the table. “She had gel on her hands, and Hunter said he found the ball near where he found her. She’d held the ball. Maybe she planted it there. Maybe she was with the arsonists and the fire got out of their control and she got trapped.”

“We can’t ignore the possibility,” Abbott said. “And if she was part of their cell, identifying her could lead us to them.”

“Or she could have been forced to be one of them.” Kane pointed to the girl’s arm. “Her injuries were real. She’d been slapped around by somebody.”

“Or she could have been an innocent bystander who found the ball and picked it up,” Olivia finished. “In which case, we’re back to square one.”

“Did you find any ID in the backpack?” Micki asked.

Barlow shook his head. “No. The contents were too burned. I told your CSU tech to bag it. We got some charred papers, books. The paper took a lot of water damage, but the lab might be able to piece together the scraps for a name or a lead.”

“Can we get in the building now?” Kane asked, but Barlow shook his head.

“Not yet. We’re still checking the fifth and sixth floors, but the damage that made the fourth floor collapse under Hunter goes all the way down. If he hadn’t caught himself, he would have gone all the way down to the basement. The tower truck’s still at the scene, though. Captain Casey said Hunter or Zell could take you up in the bucket, let you look through the windows. I also shot video as we went through the debris. I’ll transfer the files to my PC and e-mail them to you when we’re finished here.”