He had three blankets in the truck and found a long, foam seat cover from the back of the office where the staff took their boots off. More than enough for a bed. He made his nest beside the radiator pipes at the back wall, where he faced the big digital clock above the ticket windows.

Outside, the blizzard battered at the windows, the snow hitting the glass like shotgun pellets. Sam turned off the overhead striplight and wriggled, snug beneath his blankets. The big green digital numbers of the clock cast an eerie illumination on the room, reflecting dimly on the floorboards. They were reading 10.07 when he settled down, his hand beneath his head like a child. Sam had decided he was feeling better. Dreams aside, there had been no further blacking out, and it was that void of consciousness that held most terror for him. Brain tumour? Cancer? All the demons of modern medical knowledge had plagued him like a hypochondriac since that numbing collapse. But it was over now. He was well. Sure of it.

When he woke up after the dream and threw his load, the green digits were reading 10.45. Sam found himself on all fours, hunched like a dog over a pile of his own hot vomit. He was sweating and panting, and the stench of the wet bile beneath him made him retch again.

The memory of it made Sam clutch the steering wheel like a life-line. But it was what came after that was making Sam’s heart thump in his chest like a trapped bird. Nothing. That’s what happened after he woke over his own sick. At least nothing until he woke a second time. At 7.30 a.m. Fully clothed, standing outside his truck.

When Craig saw the guy that stepped out of the car he’d been more than disappointed. Not in his whole term as staff sergeant in Silver had he ever had to call in forensics from Edmonton, and this small bald man in a suit jacket covered by a cheap nylon parka didn’t look much like the cavalry.

That was six hours ago. Craig was going to give him the benefit of the doubt. Doctor Brenner had been working at Joe all day, talking into a tape recorder as he did so, and now he was standing in Craig’s office with a styrofoam cup in one hand ready to pronounce sentence.

Craig was calm as he offered the doctor a seat.

Brenner ran a delicate hand over the pate of his bald head and sat down heavily in the chair by the window.

‘How’s it looking out there?’

Brenner gesticulated with his coffee to the outside world behind him. Craig glanced out of the window.

‘It’s okay. Cold. What have you got for me?’