She pushed a yellow pad across the desk. ‘Make up any version you like. Call it a crime of passion. Say you once loved a woman to death. You’ve got six seconds, old man. Take it or leave it.’

‘Time’s up!’ Jack Coffey’s fist came down on the desk, and Geldorf jumped. ‘Now we book him. Right now!’

Lars Geldorf picked up the pad of paper, and his hand trembled as he began to write out his confession.

Mallory followed her partner across the squad room, not willing to let him out of her sight, not yet. He was one of few people who mattered to her, but that did not mean she trusted him. Riker sat down at his desk far from the pool of fluorescent light. The ember of his cigarette glowed in the dark as he dropped his match in a dish of paperclips.

‘How’s Sparrow?’ This was a test. According to her paid informant, a nurse, Riker called for updates every hour. ‘It’s almost over,’ he said, ‘just a matter of hours.’ Mallory bit back a comment that he would not like, and they sat in uneasy silence for a while, watching his smoke twist and curl. ‘You wanted Sparrow’s case so bad,’ she said. ‘Just keeping faith with a snitch? Or maybe you thought Frankie Delight’s murder would come back to bite you.’ She wanted it to be one of these two things, something cold, less personal.

Riker shrugged. ‘There was more to it, but that’s between me and Sparrow.’ He rose from the chair and stubbed out his cigarette. ‘I’m heading back to the hospital. I wanna be there when – ’

‘No you don’t,’ said Mallory. ‘I know she’s out of the coma. You weren’t planning to tell me that, were you?’ Mallory stared at him until he met her eyes. ‘It’s my turn at Sparrow.’

What a kick in the head, huh, Riker?

After all he had gone through on that whore’s account, now he must stand back, virtually handing a helpless woman over to her worst enemy. And yet he could not raise a challenge. Her claim on the dying prostitute was so much stronger than his.

He nodded, and their deal was done.

Mallory watched from the window on the street until Riker emerged from the building. Reporters converged on him with cameras and microphones – star treatment. Sergeant Bell came running out the front door to rescue him with a press release of lies, waving the paper as bait. After the mob had deserted Riker for fresh meat, he stepped into the street and let two cabs go by unhailed, for he was a man with nowhere to go from here.

A lamp switched on at the back of the squad room. The chief of Forensics sat in a small patch of light, hands folded, waiting.

Spying, Heller?

The criminalist stared at her across the span of five desks. How much had he overheard? As Mallory strolled toward him, she could see that his eyes were red and sore from lost sleep.

‘Warwick’s Used Books.’ He simply put these words out in the air between them, then solemnly awaited her reaction. Mallory was stunned and feeling threatened. He misunderstood her expression. ‘So Warwick was a suspect. I knew it.’

Mallory settled into a chair beside the desk. Dancing with this man was a tricky business, but she would not admit that she was mystified. ‘I can’t give up any information on him.’ Always best to mix lies in equal parts with the truth. ‘The scarecrow wasn’t Warwick. Does that help?’

Heller’s face lifted and brightened, flesh deepening in the folds of a wide grin. ‘Well, I guess you won’t need this.’ He handed her a sheet of paper. ‘Too bad. I called in a lot of favors to get it.’

She scanned the brief synopsis of a psychiatric history: As a child, John Warwick had stood accused of murdering his twin sister. An eyewitness had cleared the boy, but not before the police had spent six hours wrenching a false confession from a terrified eight-year-old grieving for his twin and crying for his mother. Gangs of reporters had stalked the family, increasing the trauma of a guiltless child. And John Warwick had spent the rest of his childhood in a mental institution, clinging to the fictions of cops and newspaper headlines, irretrievably lost in deep pain and unable to believe in his own innocence.

She dropped the bio sheet on the desk, unenlightened and unimpressed. From what she remembered of the bookseller, he was not capable of killing even one of the thousand flies left at each crime scene. This connection of Heller’s was so pathetic. Something had clearly gone awry in his good brain. And this foray into Warwick’s past was outside the scope of Forensics.

Mallory smiled, for she was always happiest in the attack mode. ‘You shouldn’t have messed in our business, Heller. If Warwick had been a solid suspect, you could’ve queered everything.’

‘I had to know,’ he said. ‘That bastard Riker couldn’t trust me to keep the book quiet. It should’ve been recorded on my evidence log.’ There was no animosity in Heller’s voice – far from it. He was one happy man.

The book.

Mallory was making linkages at the speed of a computer. Her machine logic flickered and faltered, for the paperback western had shown no trace of damage from the fire or the hose. Yet this book must be what Riker had snatched from the watery floor of Sparrow’s apartment. And his other gift to her was the innocent deniability of a crime. He had risked everything to hide a dangerous connection between a whore and Markowitz’s daughter.

‘Homecoming,’’ she said, ‘by Jake Swain.’

When Heller nodded, Mallory knew this man had solid proof against Riker, and no machine logic could have guided her to the next conclusion: her partner was Sheriff Peety in a bad suit.

Riker commanded such deep respect that no one could believe him guilty of a corrupt act, not even when guilt was proven beyond doubt. And Heller, of all people, had been unable to believe his own evidence, for how could Riker steal anything? The criminalist had denied his own religion of all-holy fact. He had stepped a hundred miles out of character to doggedly hunt down proof of Riker’s innocence where none existed. And Heller had actually found something that looked the same, that shined like truth -though it was only faith.

Without another word between them, they left the stationhouse and parted company on the sidewalk. And there the young detective continued her silence as she endured a civilian’s tight embrace and oft-repeated thanks. Mallory stepped back and stared at the smiling face of the next and final victim of the man who killed Natalie Homer. Susan Qualen had believed the press reports that her sister’s only child was still alive.

And so the damage of a twenty-year-old murder would not end tonight. It would drag on well into the morning hours. Following Lars Geldorf s rushed arraignment and sentencing, Natalie’s sister would be quietly told that the police had killed her nephew after all – with a baseball bat.

‘So sorry, ma’am,’ Jack Coffey would say.