Steve is smiling, and it pulls a twitch that’s almost a smile out of Rory. ‘That’s it exactly. You know what the weather was like, yesterday: it was a rotten evening, I was freezing, a tree dumped rain down the back of my collar . . . But I felt like I was in a wonderful story. The smell of turf-smoke, and the rain falling through the light of the streetlamps . . .’

‘See? That’s what I’m talking about: you remember more than you thought. And you were in Stoneybatter for a full hour, right? Half-seven to half-eight. You must’ve seen someone.’

And there it is again: the sudden involuntary twist to Rory’s neck, the jab at his glasses. Steve brings up that extra time, and all of a sudden Rory doesn’t like this game. That blood-smell hits the back of my nose again. The lift of Steve’s head tells me he smells it too.

Rory’s memory comes back: anything to distract us. ‘I did, actually. I passed three women on Prussia Street, when I was on my way to Tesco. They were dressed like they were going out, and two of them had hair like Aislinn’s, long and blond and straight – that’s why I noticed them. They were sharing an umbrella and laughing. And when I got off the bus there were a bunch of boys in hoodies kicking a football on Astrid Road, around the corner from Aislinn’s house – they didn’t stop when I got close, so I had to step onto the street and dodge around them. But I don’t see how any of them could be . . .’

Steve nods away like this is crucial info. ‘You never know. They might’ve seen something. It’s all good stuff.’ I scribble in my notebook, crucial-info-style. There’s a decent chance all these people are imaginary. ‘Anyone else? Anything else?’

Rory shakes his head. Steve waits, but nothing else pops out. ‘OK,’ he says. ‘What about your conversations with Aislinn? Take a second and think back over those. Did she ever mention anyone who bothered her? Someone at work who was a bit creepy, maybe? An ex who wouldn’t take no for an answer?’

Rory is shaking his head.

‘OK. Was there anything that seemed to make her uncomfortable? She ever get a bit cagey when any particular subject came up?’

‘Actually . . .’ Rory has relaxed again, now that we’ve moved away from the hot spot. ‘Yes. When it came to her parents, Aislinn was . . . Something was odd. She told me they were both dead – she said her dad died in a car accident when she was little, and her mum had MS for a long time and finally died of it a few years back . . . ?’

He glances back and forth between us, hoping we’ll give him a yes or a no. We don’t.