Amanda asked, "Wouldn't it have dried in the heat?"

"Possibly, but the new wet blood would release the dried blood. I would expect to see some cross-contamination."

"How are you sure the blood is Emma's?"

"I'm not, really," Charlie admitted. He found a roll of paper towels and tore off a strip so he could wipe the sweat off his face. "All I cangoby is type. The blood wefound onthe car is O-positive. Emma was the only one in the house that we know of who had that type."

"Not to question your methods," Will began, then did exactly that. "How do you know for sure that it's only type O-positive?"

"Blood types don't get along well," Charlie explained. "If you put O-pos with any type A or B, then you get a violent reaction. It's why they type you at the hospital before they give you a transfusion. It's a simple test-takes only a few minutes."

Amanda piped in. "I thought O-positive was universal?"

"That's O-negative," Charlie told her. "It has to do with antigens. If the blood types aren't compatible, then red blood cells clump together. In the body, this can cause clots that block vessels and bring about death."

Amanda's impatience was clear. "I don't need a science lesson, Charlie, just the facts. What else have you found?"

He looked back at the car, the team collecting evidence and putting it into bags, the photographer documenting each empty McDonald's cup and candy wrapper. "Not much," he admitted.

"What about the building?"

"The top two floors are empty. We cleared them first thing. I'd guess no one's stepped foot up there in six months, maybe a year. Same with the parking area upstairs. The concrete barricade has been there for a while. My guess is that this place is so old, it wasn't built to handle newer, larger cars so they closed it off to prevent collapse."

Amanda nodded. "Find me if anything else comes up."

She headed toward the building, Will trailing behind her. "Barry didn't find any discarded gloves," she told him, referring to the chief of the canine unit. "This afternoon, the dogs were able to find a trail from the Campano house to the woods at the end of their street, but there were too many scents and they lost the trail." She pointed to an area directly behind the garage. "There's another path back there that goes into those same woods. It would take ten minutes to get to the Campanos from here if you knew what you were doing."

Will remembered what Leo had told him earlier. "The girls were skipping last year until the neighbor across the street told Abigail that Emma's car was in the driveway. They could've started parking here to avoid being told on."

"But Kayla's car was parked in the driveway today," Amanda pointed out.

"Should we recanvass the neighbors, see if they remember anything?"

"You mean for a third time?" She didn't say no, but reminded him, "It's all over the news now. I'm surprised no one has talked themselves into seeing something."

Will knew that was often a problem with eyewitness testimony, especially when the crime involved children. People wanted to help so much that their brains often came up with scenarios that didn't actually happen. "What's the kid's name-the one who called in the Prius?"

"Lionel Petty." She pressed a red button by the door. A few seconds passed, then there was a buzz and click.

Will opened the door for her and followed Amanda down a long hallway that led to the Copy Right. The air-conditioning was a welcome relief from the stagnant heat in the garage. Inside the store, signs hung from the ceiling with cartoon smiling pens writing out helpful directions. The front counter was covered with reams of paper. Machines whirred in the background, swirling out sheets of paper at incredible speeds. Will glanced around, but couldn't see anyone. There was a bell on the counter and he rang it.

A kid poked up his head from behind one of the machines. His hair was a mess, as if he'd just rolled out of bed, though his goatee was neatly trimmed. "Are you the cops?" He walked toward them, and Will saw that he wasn't really a kid. Will would have put him in his late twenties, but he was dressed like a teen and he had the round, open face of a child. Except for the receding hairline, he could have passed for fifteen. He repeated his question. "Are you guys with the cops?"

Will spoke first because he knew from experience that Amanda's style of rattling off questions and demanding quick answers didn't exactly lend itself to eliciting information from strangers. He had to raise his voice to be heard above the machines. "You're Lionel Petty?"

"Yeah," he answered, smiling nervously at Amanda. "Is this going to crack the case?" The slow cadence of his voice had a slight lilt to it, and Will couldn't tell if the man was just that laid-back or had smoked a little too much weed. "I've been watching it on the news all day, and they've been showing the car, like, every five minutes. I couldn't believe when I checked out for a smoke and looked up and there it was. I thought maybe my brain was making it up because what're the odds, right?"

"Petty," a disembodied voice called. Will moved down the counter. He saw the lower half of a body sticking out from a copy machine. "Did you clock out like I told you?"

Petty smiled, and Will saw the crookedest set of teeth he'd ever seen on a man. "So, not to be crass or anything, but is there a reward? ‘We can't say no at Campano.' They live in Ansley Park. The family must be loaded."

"No," Amanda answered. She had figured out who was in charge. She asked the kid under the copier, "Where's the tape for the security cameras?"

He crawled out of the machine. There was a splotch of ink on his forehead, but his hair was neatly combed, his face clean-shaven. He was about the same age as Petty, but he lacked the other man's boyish features and stoner charm. He wiped his hands on his pants, leaving a faint trail of ink. "I'm sorry, we've got a ten thousand booklet run due first thing in the morning and my machine just jammed up."

Will glanced at the guts of the copier, thinking that its gears and cogs reminded him of a wristwatch.

"I'm Warren Grier," the man offered. "I pulled the tape as soon as your guys got here. You're lucky. We swap out the same two cassettes every day. If you'd shown up tomorrow, it probably would've been recorded over."

Will asked, "Do you have a problem with theft around here?"

"Not really. The construction makes it hard to get in and out of the building. About ninety percent of our clients never see us. We deliver out to them."

"Why the security camera?"

"Mostly to see who's at the door and to keep out the homeless people. We don't keep a lot of cash here, but the junkies don't need a lot, you know? Twenty bucks is a score for them."

"Is it just you and Lionel?"

"There's a girl who works mornings. Monique. She's seven to noon. We use a courier for deliveries. They're in and out all day." He leaned his hand on the counter. "Sandy and Frieda should be in soon. They work the evening shift."

"Who uses the offices upstairs?"

"There used to be some lawyers, but they cleared out maybe a year ago?" He was asking Petty, and the other man nodded confirmation. "They were immigration lawyers. I think they were running some kind of scam."

"Lots of shifty people," Petty provided.

"Here." Warren dug a set of keys out of his pants pocket and handed them to Petty. "Take them to my office. I stopped the tapes when your guys got here. The one on the top is from today. It hasn't been rewound yet, so you can probably find the time frame you need pretty easily." He apologized to Will. "I'm sorry, but I've got to get this machine back up. Just holler if you have any problems and I'll come back and help you."

"Thank you," Will told him. "Can I ask-have you noticed someone using the parking garage a lot lately? Maybe not the Prius, but another car?"