'When violence occurs anywhere, it is everybody's problem,' I said. 'No matter where your precinct or department is.'

Tucker stared thoughtfully ahead at the shut steel bay door. He said, 'I sure as hell couldn't do what you do when it's this late at night and there's nobody around except the people in the refrigerator.'

'It isn't them I fear,' I matter-of-factly stated.

'Irrational as it may be, I would fear them a great deal.'

Headlights bored into dingy stucco and steel all painted the same insipid beige. A red sign on a side door announced to visitors that whatever was inside was considered a biological hazard and went on to give instruction about the handling of dead bodies.

'I've got to ask you something,' Colonel Tucker said.

The wool fabric of his uniform whispered against upholstery as he shifted positions, leaning closer to me. I smelled Hermes cologne. He was handsome, with high cheekbones and strong white teeth, his body powerful beneath his skin as if its darkness were the markings of a leopard or a tiger.

'Why do you do it?' he asked.

'Why do I do what, Colonel?'

He leaned back in the seat. 'Look,' he said as lights danced across the scanner. 'You're a lawyer. You're a doctor. You're a chief and I'm a chief. That's why I'm asking. I don't mean disrespect.'

I could tell he didn't. 'I don't know why,' I confessed.

He was silent for a moment. Then he spoke again. 'My father was a yardman and my mother cleaned houses for rich people in Baltimore.' He paused. 'When I go to Baltimore now I stay in fine hotels and eat in restaurants at the harbor. I am saluted. I am addressed "The Honorable" in some mail I get. I have a house in Windsor Farms.

'I command more than six hundred people who wear guns in this violent town of yours. I know why I do what I do, Dr. Scarpetta. I do it because I had no power when I was a boy. I lived with people who had no power and learned that all the evil I heard preached about in church was rooted in the abuse of this one thing I did not have.'

The tempo and choreography of the snow had not changed. I watched it slowly cover the hood of his car.

'Colonel Tucker,' I said, 'it is Christmas Eve and Sheriff Santa has allegedly just shot someone to death in Whitcomb Court. The media must be going crazy. What do you advise?'

'I will be up all night at headquarters. I will make sure your building is patrolled. Would you like an escort home?'

'I would imagine that Marino will give me a ride, but certainly I will call if I think an additional escort is necessary. You should be aware that this predicament is further complicated by the fact that Brown hates me, and now I will be an expert witness in his case.'

'If only all of us could be so lucky.'

'I do not feel lucky.'

'You're right.' He sighed. 'You shouldn't feel lucky, for luck has nothing to do with it.'

'My case is here,' I said as the ambulance pulled into the lot, lights and sirens silent, for there is no need to rush when transporting the dead.

'Merry Christmas, Chief Scarpetta,' Tucker said as I got out of his car.

I entered through a side door and pressed a button on the wall. The bay door slowly screeched open, and the ambulance rumbled inside. Paramedics flung open the tailgate. They lifted the stretcher and wheeled the body up a ramp as I unlocked a door that led inside the morgue.

Fluorescent lighting, pale cinder block and floors gave the corridor an antiseptic ambience that was deceptive. Nothing was sterile in this place. By normal medical standards, nothing was even clean.

'Do you want him in the fridge?' one of the squad members said to me.