Petra slowly shook her head. ‘You’re never going to cut it as an actress, Marlene. That routine needs a lot of work before you go in front of a judge. Look, we both know your story is bullshit. Why don’t we cut the crap and see what I can do for you?’

‘I don’t know what you’re talking about. I told you. Kamal killed Danni. I loved Danni. Something in me snapped when I heard Kamal had been arrested and I wanted to take revenge for what he had taken from me.’

Petra smiled. It was the lizard smile of a predator who smells the first hint of blood. ‘See, Marlene, there’s the first problem. The guys who brought Kamal in, they didn’t hang around. They went straight to his restaurant, they pulled him out of the front door and into their car. Then they drove here. I’ve seen the logs. There was barely enough time for you to hear about the arrest, never mind get hold of a gun and get to Friesenstrasse in time to put a bullet in his head.’ Petra let Marlene think about that. ‘Unless of course someone tipped you the wink that the arrest was about to go down. Why would anyone do that, unless they wanted Kamal dead? So, how did you hear about Kamal’s arrest?’

‘I don’t have to answer you.’

‘No, you don’t. But you do need to listen to me, because everything I’m saying to you is a stick of dynamite blowing a hole in your mitigation. Marlene, this isn’t going to play the way whoever set you up for it said it would. Your story is going to fall to bits as soon as the KriPo start poking around. Now, I know you think they’re not going to bother too much with this because it’s saved them the hassle of a difficult prosecution with Kamal, not to mention one less scuzzy middle-ranking dealer on the streets. But me, you see, I’m bothered. Because I’m interested in the people above Kamal.’

‘You’re not making any sense,’ Krebs said obstinately. ‘Are you going to light this fucking cigarette or what?’

‘I told you. Not for free. Come on, Marlene. Face it, you’re going away for a very long time. This wasn’t a crime of passion, it was an assassination. And we’re going to prove it. You’re going to be a grandmother before you see freedom again.’

For the first time, there was a flicker of something behind Krebs’ cold eyes. ‘You can’t prove what isn’t true.’