We send texts, we call. When there’s no response we sit on the steps beside the water, drink our beers and swap stories of the evening, doing our best to seem unconcerned, neither wanting to be the first to sound the alarm. After all, we’ve been losing each other on and off all night. Patchy signals, batteries run down, battery packs mislaid, meeting points misunderstood. I tell Anna the boys have probably gone for a piss somewhere. Maybe they’ve bumped into someone we know. Bo is always so casual about these things and Dex takes his cues from Bo. All the same, in some dark corner of my mind a tick-tick of disquiet is beginning to build.

It’s growing cold now and the red hairs on Anna’s arms are tiny soldiers standing to attention.

‘Shall we call it a day?’ she says, giving me one of her fragile smiles.

I sling an arm over her shoulder. ‘Do you want to?’

‘Not really, but you know, we’ve lost the boys and … husbands, babies.’

And so we stand up and brushing ourselves down, turn back down the alley towards Wapping High Street, and that’s when it happens. A yelp followed by a shout and the sound of racing feet. Anna’s body tenses. A few feet ahead of us a dozen men burst round the corner into Wapping High Street and come hurtling towards us, some facing front, others sliding crabwise, one eye on whatever’s behind them, clutching bottles, sticks, a piece of drainpipe and bristling with hostility. A blade catches the light of a street lamp. We’re surrounded now by a press of drunk and angry men and women. From somewhere close blue lights begin to flash.

‘We need to get out of here,’ hisses Anna, her skinny hand gripping my arm.

They say a person’s destiny is all just a matter of timing. A single second can change the course of a life. It can make your wildest dreams come true or leave you with questions for which there will never be any answers. What if I had not done what I did earlier that night? And what if, instead of using the excuse of another beer to test the loyalty of my friends and reassure myself that, in spite of what had happened earlier that night, I couldn’t be all bad, I had been less selfish and done what the others wanted and gone home? Would this have changed anything?