But driving up to the U.S./Canada border that morning, I was so rattled I could hear my fillings clanking. How could Moretti’s hit be mistaken for the work of some psycho? Any cop knows the difference between a professional hit and a serial killing.

Had I unintentionally copied part of the killer’s MO? The case had been plastered across the airwaves and newspapers for a week now, but I’d behaved myself. If an update came on the radio, I’d changed the station. If the paper printed an article, I’d flipped past it. It hadn’t been easy. Few aspects of American culture are as popular with the Canadian media as crime. We lap it up with equal parts fascination and condescension: “What an incredible case. Thank God things like that hardly ever happen up here.” But I no longer allowed myself to be fascinated. In hindsight, it was a choice that warranted a special place on the overcrowded roster of “Nadia Stafford’s Regrettable Life Decisions.”

I’d driven all night, as I always did, eager to get home as soon as my work was done. It was just past seven now, with only a few short lines of early morning travelers at the border. As the queue inched forward, I rolled down my window, hoping the chill air would freeze-dry my sweat before I reached the booth. Somewhere to my left, a motorcycle revved its engine and my head jerked up.

Normally, crossing the border was no cause for alarm. Even post-9/11, it’s easy enough, so long as you have photo ID. Mine was the best money could buy. Half the time, the guards never gave it more than the most cursory glance. I’m a thirty-two-year-old, white, middle-class woman. Run me through a racial profile and you get “cross-border shopper.”

In light of the Helter Skelter killings, they’d probably look closer at everyone, but I had nothing to hide. I’d switched my New York–plated rental for my Ontario-plated one. I’d disposed of my disguise in New York. The Tomassinis paid me in uncut gemstones, which are small enough that I could hide them in places no border agent would normally look.

I pulled forward. Second in line now.

It would be fine. Let’s face it, how many terrorists enter Canada from the U.S.? Even illegal immigrants stream the other way. Yet even as I told myself this, the agent manning my booth waved the vehicle in front of me over to the search area. It was a minivan driven by a white-haired woman who could barely see over the steering wheel.

I assessed my chances of jumping into another line, where the agent might be in a better mood, but nothing says smuggler like lane-jumping.

I removed my sunglasses and pulled up to the booth.

The agent peered down from his chair. “Destination?”

“Heading home,” I said. “Hamilton.”