`Bye, Dad.’ She pecked him on the cheek.

`Next week?’

`I'll phone you. Maybe the three of us…?’

By which she meant Ned Farlowe, her boyfriend. She was walking backwards as she spoke. One final wave, and she turned away from him, head moving as she checked the evening traffic, crossing the road without looking back. But on the opposite pavement she half-turned, saw him watching her, waved her hand in acknowledgment. A young man almost collided with her. He was staring at the pavement, the thin black cord from a pair of earphones dribbling down his neck. Turn round and look at her, Rebus commanded. Isn't she incredible? But the youth kept shuffling along the pavement, oblivious to her world.

And then she'd turned a corner and was gone. Rebus could only imagine her now: making sure the pizza box was secure beneath her left arm; walking with eyes fixed firmly ahead of her; rubbing a thumb behind her right ear, which she'd recently had pierced for the third time. He knew that her nose would twitch when she thought of something funny. He knew that if she wanted to concentrate, she might tuck the corner of one jacket-lapel into her mouth. He knew that she wore a bracelet of braided leather, three silver rings, a cheap watch with black plastic strap and indigo face. He knew that the brown of her hair was its natural colour. He knew she was headed for a Guy Fawkes party, but didn't intend staying long.

He didn't know nearly enough about her, which was why he'd wanted them to meet for dinner. It had been a tortuous process: dates rejigged, last-minute cancellations. Sometimes it was her fault, more often his. Even tonight he should have been elsewhere. He ran his hands down the front of his jacket, feeling the bulge in his inside breast pocket, his own little time-bomb. Checking his watch, he saw it was nearly nine o'clock. He could drive or he could walk – he wasn't going far.