The front door to the building flew open and Pam, breathless after her run from the subway burst into the hall. She threw herself into his arms before he had even risen to his feet. He wobbled and nearly fell.

‘Are you all right?’

‘Fine, I guess,’ he muttered. ‘Bumped and scraped a little.’ Seth glanced at her with hollow eyes, wary eyes. It was as if he were struggling to keep from blaming her for the attack. Pam noticed, frowned. She wiped tears then swiped away strands of hair plastered to her pink cheeks.

Sachs put her arm around the girl, sensed the tension and let go. She stepped back.

‘What happened?’ Pam asked.

The detective explained, not sparing any details. Given the difficult life that Pam had experienced, she wasn’t a person you had to hand-feed hard news to.

Still, her taut face seemed to take on an accusatory gaze as she listened to the story, as if it was Sachs’s fault the killer had come here. Sachs dug a fingernail into her thumb, hard.

Cheyenne Edwards appeared in the doorway, still in coveralls but without the face mask or surgeon’s cap. She carted a milk crate containing a dozen plastic and paper bags.

‘Chey, how’s it look?’

The officer grimaced and said to Sachs, ‘Had to save his life, did you? I mean, could you get any more outsiders into that storeroom? One of the most contaminated scenes I’ve ever run.’ She laughed and then winked at the young man. ‘Can I roll you?’

‘Can you—?’

‘The perp touched you, right?’

‘Yeah, grabbed me around the chest when he injected me with that crap.’

Edwards took a dog hair roller and collected trace everywhere on his shirt that Seth indicated. She bagged the adhesive strips and headed to the CSU rapid response van, calling, ‘I’ll get this stuff to Lincoln.’

Sachs said to Pam, ‘You can’t stay here. I think you should move into your bedroom at Lincoln’s. We’ll have officers here until you pack what you need.’

The young woman looked at Seth, and the implicit question that fluttered between them was: I could stay with you, right?

He said nothing.

Sachs said, ‘And, Seth, you should probably stay with some friends or your family. He could’ve gotten your address. You’re a witness and that means you’re at risk.’ This was purely practical, not a ploy to separate Romeo and Juliet. Pam, though, shot Sachs an expression that said, I know what you’re up to.

Seth wasn’t looking at Pam as he said, ‘There’re a couple guys I know from the ad agency. Have a place in Chelsea. I can crash there.’ Sachs could see he wasn’t concealing his blame for Pam very well.

‘I hope it won’t have to be long. And?’ she asked Pam. ‘You coming to Lincoln’s?’