‘One thing we should be thinking about,’ said Costain, also in a whisper, struck by a sudden thought, ‘is, if the murders are about Jack the Ripper being remembered, why aren’t they happening right here? Everything we’ve seen like this before – from Berkeley Square to when Losley got powered up – it all stayed put where it was. Or where it was most associated with, like your ships.’

‘Yeah.’ Ross took out one of her enormous rough books and wrote it down.

Costain found himself taking pleasure in that. ‘Ever since we found those files in Docklands—’

She suddenly looked straight at him, as if he’d caught her out, then looked away again, as if she’d revealed too much of herself. Interesting. ‘What?’ she said, finding something else to write.

He drew closer to her and she closed the book, as if to stop him seeing inside it. ‘The Continuing Projects Team were obsessed with architecture,’ he said. ‘Maybe our two victims were just in the wrong place, kind of like deadly feng shui.’

Ross nodded, but she didn’t look convinced. Her face wasn’t giving anything away.

‘Perhaps you’d like to share with the class?’ Fennix had stopped and, having realized that Ross and Costain weren’t going to shut up, had decided to mock them for it. That had got a laugh too.

Get many tips, do you? Costain flashed the man his most generous grin. ‘We’re just fascinated with this stuff, mate. Tell us more. We were just saying there’s a Jewish graveyard round the corner—’