‘I met him about the same time I met Dan Rush, back at the Florida Array. He was another of Jeff ’s colleagues.’ She paused. ‘The thing that made me remember Maalouf just now is that he’s an encryption specialist. He’s well known in certain specialized technical fields. I couldn’t think at first why Jeff would need to hide something with military-grade locks on it, but then I remembered him talking about Maalouf and Newton and, with everything else going on, I wondered if maybe there was some connection with the files. It seemed strange he’d bring up Maalouf, of all people. And, even if there isn’t a connection, if there’s anyone that could break the encryption on those files, my guess is it would be Maalouf.’

‘And that’s everything you know? Are you absolutely sure there isn’t anything else you need to remember?’

‘Nothing, I swear.’

Saul found it hard to hide his irritation. ‘Jesus, Olivia, military-grade encryption? What exactly is it you think Jeff’s got himself involved in?’

‘I already told you I don’t know,’ she said, her voice taking on a ragged edge once more. ‘I just want to know he’s safe.’

Saul was surprised at how much her last words cut him. He’d thought he’d left his feelings for her far behind him, but it looked like he’d been wrong.

He sighed and fell back on the bed, staring up at the ceiling. ‘What makes you so sure this Maalouf guy could get inside those files?’

‘He’s got a fearsome reputation. He’s published a few articles, most of it pretty arcane stuff. If you want to build an encryption system, he’s the man you call up.’

‘Too arcane even for a dedicated systems specialist like yourself?’

She laughed. ‘Even for me.’

‘Say I managed to get hold of him, how do we know we can trust him?’

‘Well, he did work with Jeff,’ she said tentatively, ‘and I had the definite sense they were friends – maybe even close friends. That must count for something.’

‘D’you think he might know where Jeff is?’

‘It’s possible. Maybe I should try and get in touch with Maalouf myself. I know I’ve asked too much of you already.’

‘No,’ he said, sitting up, ‘I don’t want you getting any more involved than you already are.’ He had a mental image of dark figures struggling by a moonlit shore, shots ringing out. ‘I can start by taking a look in the ASI’s personnel databases – see what I can find about him from there.’

She let out a sigh that was comprised in equal parts of relief and worry. ‘Thank you, Saul, from the bottom of my heart. Really.’

‘There’s a lot more going on here than just one missing scientist,’ he said. ‘I assume you realize that by now.’

‘I do.’