By the time several layers of wax had been applied to the shoe prints, the dental stone would be cool enough to pour and make casts. The conditions were actually good for what was ordinarily a risky procedure. There was neither sun nor wind, and apparently the NYPD crime scene technicians had properly stored the wax at room temperature, because it had not lost its pressure. Nozzles were not spitting or clogged as I had so often seen with attempts in the past.

‘Maybe we’ll be lucky this time,’ I said to Wesley as Marino headed our way.

‘We’re going to need all the luck we can get,’ he said, staring off into dark woods.

East of us was the outer limits of the thirty-seven acres known as the Ramble, the isolated area of Central Park famous for bird-watching and winding footpaths through dense, rocky terrain. Every guidebook I had ever seen warned tourists that the Ramble was not recommended for lone hikers at any season or time of day. I wondered how Gault had enticed his victim into the park. I wondered where he had met her and what it was that had set him into motion. Perhaps it was simply that she had been an opportunity and he had been in the mood.

‘How does one get from the Ramble to here?’ I asked anybody who would listen.

The officer stirring dental stone met my eyes. He was about Marino’s age, cheeks fleshy and red from the cold.

‘There’s a path along the lake,’ he said, breath smoking.

‘What lake?’

‘You can’t see it real well. It’s frozen and covered with snow.’

‘Do you know if this path is the one they took?’

‘This is a big park, ma’am. The snow’s real messed up in most other places, like the Ramble, for example. Over there, nothing - not ten feet of snow - is going to keep away people after drugs or an encounter. Now here in Cherry Hill, you got another story. You got no cars allowed and for sure the horses aren’t coming up here in weather like this. So we’re lucky. We got a crime scene left.’

‘Why are you thinking the perpetrator and the victim started in the Ramble?’ asked Wesley, who was always direct and often terse when his profiler’s mind was going through its convoluted subroutines and searching its scary database.

‘One of the guys thinks he may have spotted her shoe prints over there,’ said the officer, who liked to talk. ‘Problem is, as you can see, hers aren’t very distinctive.’

We looked around snow that was getting increasingly marred by law enforcement feet. The victim’s footwear had no tread.

‘Plus,’ he went on, ‘since there may be a homosexual component, we’re considering the Ramble might have been a primary destination.’

‘What homosexual component?’ Wesley blandly asked.