I considered the traditional cop solution--booze, early and often--but I was scared I would end up phoning inappropriate people at three in the morning to spill my guts, plus I discovered that target practice anaesthetized me almost as well and without any messy side effects. This made almost no sense, given the way I was reacting to loud noises in general, but I was OK with that. After the first few shots a fuse would blow in the back of my brain and the rest of the world vanished somewhere faint and far away, my hands turned rock-steady on the gun and it was just me and the paper target, the hard familiar smell of powder in the air and my back braced solid against the recoil. I came out calm and numb as if I'd been Valiumed. By the time the effect wore off, I had made it through another day at work and I could go whack my head off sharp corners in the comfort of my own home. I'd got to the point where I could make nine head shots out of ten, at forty yards, and the wizened little man who ran the range had started looking at me with a horse trainer's eye and making noises about the department championships.

I finished up around seven, that morning. I was in the locker room, cleaning my gun and trying to shoot the breeze with two guys from Vice without giving them the impression that I wanted to go get breakfast, when my mobile phone rang.

"Jesus," one of the Vice boys said. "You're DV, aren't you? Who has the energy to beat up his missus at this hour?"

"You can always make time for the things that really matter," I said, digging my locker key out of my pocket.

"Maybe it's black ops," said the younger guy, grinning at me. "Looking for sharpshooters." He was big and redheaded, and he thought I was cute. He had his muscles arranged to full advantage, and I had caught him checking out my ring finger.

"Must've heard we weren't available," said his mate.

I fished the phone out of my locker. The screen said SAM O'NEILL, and the missed-call icon was flashing at me in one corner.

"Hi," I said. "What's up?"

"Cassie," Sam said. He sounded terrible: breathless and sick, as if someone had punched the wind out of him. "Are you OK?"

I turned my shoulder to the Vice guys and moved off into a corner. "I'm fine. Why? What's wrong?"

"Jesus Christ," Sam said. He made a hard little noise like his throat was too tight. "I called you four times. I was about to send someone over to your place looking for you. Why didn't you answer your bloody phone?"

This was not like Sam. He's the gentlest guy I've ever known. "I'm at the firing range," I said. "It was in my locker. What's happened?"

"Sorry. I didn't mean to . . . sorry." He made that harsh little sound again. "I got called out. On a case."