‘They don’t know yet. They don’t know anything.’ Rachel wiped more tears. ‘He came home. He said he had the flu and just wanted to lie down for a bit. When I was leaving for my shift he didn’t look good. I left but then I thought, no, no, he doesn’t have the flu. It’s something else.’ Rachel was a nurse and had worked trauma rooms for some years. ‘I came back and found him convulsing and vomiting. I cleared an airway and called nine one one. The medic said it seemed to be poisoning. What had he eaten or had to drink recently? They thought it was food poisoning. But no way. You should’ve seen him.’

‘Sachs, show your shield. Tell somebody that Lon was running a case involving water hemlock, tetrodotoxin, concentrated nicotine and a plant that contains atropine, hyoscyamine and scopolamine. Oh, and hypochlorous acid. That might help them.’

She scribbled this down and walked to the nurses’ station, relayed the information and then returned.

‘Was he attacked? Tattooed?’ Rhyme asked. Then explained about the unsub’s MO.

‘No. He must’ve ingested it,’ said Rachel. She straightened her mass of brown hair, laced with gray strands. ‘On the way to the hospital he came to briefly. He was pretty disoriented but he looked at me and seemed to recognize me. His eyes, they kept flipping into and out of focus. The pain was terrible! I think he broke a tooth, his jaw was pressed so tight together.’ A sigh. ‘He said a couple of things. First, that he’d had a bagel with some salmon, cream cheese. At a deli in Manhattan, downtown.’

‘Unlikely to get any poison into his food in a public facility,’ Rhyme said.

‘I thought that too. But he said something else.’

‘What was that?’ Sachs asked.

‘He said your name, Amelia. And then “coffee”. Or “the coffee”. Does that mean anything?’

‘Coffee.’ Sachs grimaced. ‘It sure does. At the Belvedere scene there was a fireman walking around with cartons of coffee. He offered some to both of us. Lon took one. I didn’t.’

‘Fireman?’ Rhyme asked.

‘No,’ Sachs said grimly. ‘It was Eleven-Five, wearing a fireman’s uniform. Goddamn it! He was right in front of us. Of course that’s who it was. I remember he was wearing gloves when he passed out the coffee. Jesus. He was two feet away from me. And had a bio mask on. Naturally.’

‘Excuse me.’ A voice behind them.

The doctor was a slight East Indian with a powdery complexion and busy fingers. He blinked when he noted the pistol on Sachs’s right hip then relaxed, seeing the gold shield on the left. Rhyme’s wheelchair received a fast, uninterested glance.

‘Mrs Sellitto?’

Rachel stepped forward. ‘It’s Parker. Ms. I’m Lon’s partner.’

‘I’m Shree Harandi. The chief toxicologist here.’

‘How is he? Please?’