Petra laughed out loud. ‘Oh, please, Marlene. I thought your sort believed that’s what us cops do all the time? OK, proving what isn’t true can sometimes be … demanding. But compared to that, proving what we know to be true is a piece of piss. I know you were put up to this. And I know the people who did that gambled on us not caring too much about who took Kamal down or why. But they weren’t gambling with their own stake. They were using you for chips. So, we already have a hole in your story about time. I think the next hole will be where you got the gun from.’

‘It was Danni’s gun,’ she said quickly. ‘He left it in my apartment.’

‘Which is about ten minutes drive from Kamal’s restaurant and a good twenty-minute drive from here. But the cops only took thirteen minutes to get here from Kamal’s. You couldn’t possibly have made it here in time, even if someone had called you the minute the cops took Kamal into custody. So calling it Danni’s gun makes a second hole in your story.’ Petra picked up the cigarette packet and put it back in her pocket.

‘Right now,’ she continued, ‘I’ve got a team out in Mitte talking to everybody who knows you and who knew Danni. I’d put money on us not finding a single person who can put you and him together. Well, maybe we’ll get one or two. But I’d put money on the fact that they’ll be tied in as closely to Darko Krasic as you are.’

At the sound of Krasic’s name, Krebs reacted. Her thumb flicked the end of the cigarette so hard she broke the filter tip clean off. For one brief moment, something sparked in her eyes. Inside, Petra rejoiced. The first crack had appeared. Now for the crowbar.

‘Give him up, Marlene. He’s thrown you to the wolves. You talk to me, you can save yourself. You can watch your kid grow up.’