The bathroom was professionally sparkling but I was hoping that whoever the cleaner was she’d drawn the line at going into the bedrooms. Judging by the combination old sock and ganja smell in the smaller of the two bedrooms she had indeed. Zach’s bedroom, I guessed. The clothes scattered on the floor had British labels and there was a high-tech bong vaporiser, improvised out of a converted soldering iron and Perspex tube, stashed under the bed. I only found one bit of luggage, a large gym bag with worn straps and stains on the bottom. I gave it a cautious sniff. It had been washed recently but under the detergent there was just of whiff of something rank. What my dad would call tramp smell.

Whatever it was it wasn’t magical, so I headed out.

Guleed and I met on the landing.

‘No diary or address book – it must be on his phone,’ she said. ‘A couple of airmail letters, his mum I think, same address as the driver’s licence.’ She said she was going to call the police in America and ask them to make contact. I asked her how she was going to find the number.

‘That’s what internet is for,’ she said.

‘That’s not how the song goes,’ I said but she didn’t get it. ‘I think the governor is going to want to take a close look at Zach, especially if he hasn’t got an alibi.’

‘Why’s that?’

‘I don’t think he’s a student,’ I said. ‘He might even have been sleeping rough.’

Guleed gave me a lopsided smile. ‘Must be a villain then.’

‘Have you done a PNC check yet?’

‘Never mind my job, Peter. You’re supposed to be checking for magic or whatever.’ She smiled to show that she was half joking, but only half. I let her get on with her job and stepped into James’ bedroom to see if I could detect any weird bollocks.

Which appeared to be in short supply.

I was surprised by the lack of posters on the walls, but James Gallagher had been twenty-three. Maybe he’d outgrown posters or maybe he was saving the space for more serious work. There was a stack of canvasses leaning against the wall. They were mostly city scenes, local I thought, after recognising Portobello Market. It didn’t look like tourist tat so I figured it was probably his own work – a bit retro for a modern art school student, though.