She had to keep thinking like that, because she knew there was no way she was going to get out of here until it was over. OK, she could leap up and demand the key and they probably wouldn’t use violence to stop her. (Or would they?)

But that wouldn’t be awfully cool, would it?

Besides, it might be, you know… kind of interesting.

The air in the groundsman’s hut smelled of oil and sweat. The candlelight had found a little moisture in the cleft over Layla Riddock’s upper lip as it curled at last into a sort of smile.

‘Let’s go for it, then,’ Layla said.

It was terrifying.

And like… really addictive.

The glass made an eerie sound as it moved across the greasy surface of Steve’s bench. Like a coffin sliding through the curtains of a crematorium, reflected Jane, who had never been inside a crematorium, not even when her dad had died.

The first time-

‘Are you here?’ Layla had asked calmly.

— the glass shot directly to YES with the snap precision of a fast cue ball on a snooker table, and the sudden movement made both candle-flames go almost horizontal, like in the wind created when someone suddenly slams a door. Jane was so shocked she almost jerked her finger away.

‘Good,’ Layla said.

Jane let out a fast breath. She hadn’t expected that to happen. Nobody could be pushing; it just wasn’t possible.

‘Now, tell us your name,’ Layla instructed.

It, Jane thought.

There couldn’t be an it. Not on a summer afternoon in Slobbery Steve’s filthy shed in the precincts of the dreary once-modernist Moorfield High School, Herefordshire.

It was a scam, that was all. There had to be a trick to it, a method of setting up momentum without appearing to apply pressure — an interesting end-of-term conundrum for the anoraks in the new science block.