He squared his shoulders and strode out for the towering monument to Prussia’s military successes that Hitler had moved from its original site to form a traffic island, emphasizing its domineering height. The gilded winged victory that crowned the Siegessäule gleamed like a beacon in the city lights, facing France in defiant denial of the past century’s defeats. Tadeusz paused at the corner. There was no sign of Krasic yet, and he didn’t want to loiter there looking obvious. Caution was, in his experience, its own reward. He crossed the road to the monument itself and strolled around the base, pretending to study the elaborate mosaics showing the reunification of the German people. My grandmother’s Polish heart would shrivel in her breast if she could see me here, he thought. I can hear her now. ‘I didn’t raise you to become the Prince of Charlottenburg,’ she’d be screaming at me. At the thought, his lips curled in a sardonic smile.

A dark Mercedes pulled up at the kerb and discreetly flashed its lights. Tadeusz crossed the roundabout and climbed in the open door. ‘Sorry to spoil your evening, Tadzio,’ Krasic said. ‘But, like I told you, we’ve got a problem.’

‘It’s OK,’ Tadeusz said, leaning back against the seat and unbuttoning his coat as the car moved off down Bismarckstrasse. ‘My evening was spoiled by a bastard on a BMW, not by you. So, what’s this problem?’

‘Normally, I wouldn’t bother about something like this, but … That package of brown we brought up from the Chinese? You remember?’

‘I’m not likely to forget. I haven’t had my hands on the product for so long, it’s not as if I could confuse it. What about it?’

‘It looks like there’s some sort of crap in it. There’s four junkies dead in S036, and according to what I hear, there’s another seven in hospital in intensive care.’

Tadeusz raised his eyebrows. East Kreuzberg, known locally by its old GDR postal code, was the heart of the city’s youth culture. Bars, clubs, live-music joints kept the area round Oranienstrasse buzzing towards dawn every night. It was also home to many of the city’s Turks, but there were probably more vendors of street drugs than of kebabs in the scruffy, edgy suburb. ‘Since when have you given a shit about dead junkies, Darko?’ he asked.

Krasic shifted his shoulders impatiently. ‘I don’t give a shit about them. There’ll be four more tomorrow queuing up to take their place. Thing is, Tadzio, nobody pays any attention to one dead junkie. But even the cops have to sit up a bit when there are four bodies on the slab and it looks like there are more to come.’

‘How can you be sure it’s our junk that’s killing them? We’re not the only firm on the streets.’