Somewhere else in the house, a dog barked. It was a smaller dog, and one with a bark that suggested it might be just about as old as Donald.

"So is this about that man I saw this morning?" Donald asked. He plopped himself down into an armchair in the living room.

"Yes, sir, it is," Avery said. "We were told that you saw a tall man that appeared to be hiding something under his-"

The dog that was located somewhere in the back of the apartment started to bark even more. Its yaps were loud and sort of grizzled.

"Shut it, Daisy!" Donald said. The dog went silent, giving a little whimper. Donald shook his head and gave a chuckle. "Daisy loves company," he said. "But she's getting old and tends to pee on people when she gets too excited, so I had to lock her up for your visit. I was out walking her this morning when I saw that man."

"How far do you walk her?" Avery asked.

"Oh, Daisy and I walk at least a mile and a half just about every morning. My ticker isn't as strong as it used to be. The doctor says I need to walk as much as possible. It's supposed to keep my joints in top order, too."

"I see," Avery said. "Do you take the same route every morning?"

"No. We switch it up from time to time. We have about five different routes we take."

"And where were you when you saw the man this morning?"

"Out on Kirkley. Me and Daisy had just come around the corner of Spring Street. That part of town is always empty in the mornings. A few work trucks here and there but that's about it. I think we've pa.s.sed two or three people on Kirkley in the last month or so...and they were all walking their dogs. You don't even get any of those m.a.s.o.c.h.i.s.tic people that like to run out in this area."

It was obvious by the way he chatted that Donald Greer did not get many visitors. He was overly chatty and spoke very loudly. Avery wondered if it was because age had affected his hearing or if his ears were shot from listening to Daisy raise h.e.l.l all day.

"And was this man coming or going?" Avery asked.

"Coming, I think. I'm not sure. He was a good ways ahead of me and he seemed to sort of stop for a second when I got on Kirkley. I think he knew I was there, behind him. He started walking again, sort of fast, and then just sort of disappeared into the fog. Maybe he took one of those side streets along Kirkley."

"Was he maybe walking a dog?" Ramirez asked.

"Nope. I would have known. Daisy goes ballistic when she sees another dog or even smells one in the area. But she stayed just as quiet as always."

"Do you have any idea what he might have been holding under that jacket you say he was wearing?"

"I couldn't see," Donald said. "I just saw him shifting something under it. But the fog this morning was just too thick."

"And what about the coat he was wearing?" Avery asked. "What kind was it?"

Before he could answer, they were interrupted by Ramirez's cell phone. He answered it and stepped away, speaking quietly into it.

"The coat," Donald said, "was like one of those long fancy sort of black coats that businessmen wear sometimes. The kinds that come down to their knees."

"Like an overcoat," Avery.

"Yeah," Donald said. "That's it."

Avery was running out of questions, feeling pretty certain that this interview with their only witness was a bust. She tried to find another relevant question as Ramirez stepped back into the room.

"I need to get going," Ramirez said. "Connelly wants me as an extra set of hands with some matter over near Boston College."

"That's fine," Avery said. "I think we're done here anyway." She turned to Donald and said, "Mr. Greer, thank you so much for your time."

Donald walked them out to the apartment building entrance and waved them off as they got into the car.

"You tagging along with me?" Ramirez asked when they were headed back down the street.

"No," she said. "I think I'm going to go back to the crime scene."

"Kirkley Street?" he said.

"Yeah. You can take the car to do whatever errand Connelly has you running. I'll catch a cab back to headquarters."

"You sure?"

"Yeah. It's not like I have anything else to-"

"To what?"

"s.h.i.t!"

"What is it?" Ramirez asked, concerned.

"Rose. I was supposed to hang out with Rose this afternoon. I made this huge deal about a girls' day out. And it looks like that's not going to happen. I'm going to have to let her down again."

"She'll understand," Ramirez said.

"No. No, she won't. I always do this to her."

Ramirez had no reply to that. The car remained in silence until they reached Kirkley Street. Ramirez pulled the car to the side of the street directly across from the morning's crime scene.

"Be careful," Ramirez said.

"I will," she said. She surprised herself when she leaned over and kissed him briefly on the mouth.

She then got out of the car and started studying the scene immediately. She was so focused and in the zone that she barely noticed when Ramirez pulled away behind her.

CHAPTER SIX.

After staring at the scene for a moment, Avery turned and looked down the street. Her eyes followed the path that Donald Greer must have been taking, all the way down to her right, where Kirkley intersected with Spring Street. She walked down the street, came to the intersection, and then turned.

Several thoughts entered her mind as she started to walk forward. Had the killer been on foot the entire time? And if so, why had he come in from Spring Street-a street just as barren and washed up as Kirkley? Or perhaps he had come by car. If that was the case, where would he have parked? If the fog had been thick enough, he could have parked anywhere along Kirkley and his car could have gone unseen.

If the man in the long black coat was indeed their killer, he had walked along this same route less than eight hours ago. She tried to envision the scene shrouded in thick morning fog. Because it was such a desolate area of town, it was not hard to do. As she walked slowly forward to the lot where the bones and the shards hard been found, she kept her eyes open for potential places the man could have ducked out of sight.

There were plenty of them, to be sure. There were six empty lots and two side streets that the man could have hidden in. If the fog had been thick enough, any of those locations would have made for ample cover.

That raised an interesting thought. If the man had hidden in one of those areas, he had let Donald Greer go by without bothering him. That took out the possibility of the murder being an act of sheer violence. Most people capable of that sort of violence would not have let Donald pa.s.s by so easily. In fact, Donald would have become a victim in most cases.

If she needed any further proof that the body had been burned somewhere else, this thought gave it to her. Perhaps, then, the item the man had been shifting beneath his coat had been a container holding the remains that he had dumped in the lot.

It made sense and she slowly started to feel a ramped-up sense of accomplishment. Now she was getting somewhere.

She walked to the lot where the remains had been found. Ever efficient and prompt, O'Malley had already cleared police away from the scene. She a.s.sumed he had done this just as soon as forensics had come by and collected the remains.

She walked to where the bones and ash had been dumped and simply stood there, looking around. The marshy area behind the lot was more visible than ever now. It was so close and much less open than the lot. So why would someone dump the bones in the middle of the lot rather than a weeded-over creek? Why would they put the remains right out in the open rather than ditching them in mud and stagnant water?

It was a question they had already approached. And in her mind, the answer was proof that they were dealing with a serial killer.

Because he wants people to see his work. He's proud and maybe a little arrogant.

She thought he might be clever, too. The use of fog to hide himself indicated that he had planned things very well. He'd have to be persistent about checking the weather to make sure there would be ample fog. He also had to know the area relatively well. It would have to have taken some serious planning.

And fire...he'd have to know fire well. To burn a body so cleanly without charring or otherwise damaging the bones spoke of dedication and patience. The killer would really have to know a great deal about fire and the process of burning.

Burning, she thought. Fire.

As she studied the crime scene and envisioned the killer standing in this same place, she felt like she was missing something-that some crucial clue was staring her right in the face. But all there was to see was the marshy and muddy area at the back of the property as well as the small square of s.p.a.ce where some poor victim had been dumped out as if they were nothing more than a standard pile of trash.

She looked around the empty lot again and wondered if perhaps the location of the remains was not as important as she thought. If the killer was using fire as a way to send a message to someone (either the victim or the police), maybe that was what she needed to focus on.

With an idea coming to her mind, she pulled out her phone and called up the closest cab company for a ride out of there. After the call was placed and the cab had been requested, she looked through her contacts and stared at her daughter's name for five seconds.

I'm so sorry, Rose, she thought.

She pressed CALL and brought the phone to her ear as her heart broke a little.

Rose answered on the third ring. She sounded happy right away. Avery could hear music playing softly in the background. She could imagine Rose getting ready for their afternoon out and hated herself a little.

"Hey, Mom," Avery said.

"Hey, Rose."

"What's up?"

"Rose..." she said. She felt tears coming on. She looked out at the empty lot behind her, trying to convince herself that she had to do this and that one day, Rose would understand.

Without Avery having to say another word, Rose apparently caught on to the emotion. She let out a little angry laugh. "Perfect," Rose said, the joy now gone from her voice. "Mom, are you f.u.c.king serious right now?"

Avery had heard Rose curse before but this time it was like a dagger to her heart because she deserved it.

"Rose, a case came up. A pretty bad one and I have to-"

"I know what you have to do," Rose said. She did not scream. She barely even raised her voice. And somehow, that made it that much worse.

"Rose, I can't help this. I certainly didn't expect this to pop up. When I made those plans with you, I had a wide open schedule for a few days. But this thing popped and...well, things change."

"I guess they do sometimes," Rose said. "But not with you. With you, things pretty much stay the same...when it comes to me, anyway."

"Rose, that's not fair."

"Don't you even try telling me what's not fair right now! And you know what, Mom? Just forget about it. This time and any other time you might want to pretend to play Good Mother in the future. It's not in the cards for us."

"Rose-"

"I get it, Mom. I do. But do you know how much it sucks to have this woman as your mother...a kick-a.s.s woman with a demanding job? A woman I respect the h.e.l.l out of...but a woman that time and time again disappoints me?"

Avery had no idea what to say. Which was just as well, since Rose was done.

"Bye, Mom. Thanks for letting me know in advance, though. Better than being stood up altogether, I guess."

"Rose, I-"

But the line went dead.

Avery shoved her phone back into her pocket and took a deep breath. A single tear rolled down her face from her right eye and she wiped it away as quickly as she could. She then walked purposefully over to the area that had been cordoned off with crime scene tape earlier in the morning and stared at it for a very long time.

Fire, she thought. Maybe it's more than something the killer is using for his acts. Maybe it's symbolic. Maybe fire offers more of a clue than anything else.

So as she waited for the cab to arrive, she thought of fire and what sort of person might use it to deliver some sort of a message. It was hard to get a grasp on it, though, as she knew very little about arson.

I'll need a second mind at work on this, she thought.

And with that thought, she pulled out her phone and called up the A1 headquarters. She asked to be put through to Sloane Miller, the A1 psychologist and in-house shrink for the officers and detectives. If anyone could tap into the mind of a killer with fire on the brain, it would be Sloane.

CHAPTER SEVEN.