I offered her the packet. She looked at it as if I'd just posed a major philosophical question, then took it and shook out a cigarette. Ignoring the ignition patch on the side of the packet, she searched her pockets, produced a heavy petrol lighter and snapped it open. She seemed to be on autopilot, moving aside almost without noticing to let a forensics team bring in new equipment, then returning the lighter to a different pocket. Around us, the lobby seemed suddenly crowded with efficient people doing their jobs.