Narendra made a gesture and the footage came to an immediate halt. ‘Eren was lucky to survive that encounter,’ he explained, ‘so he would very much like to know the identity of those men who killed Farad.’

Saul figured there had to be at least four in the assassination squad. The shots already fired before the van arrived meant that at least one person other than Donohue and the second gunman had taken part in the hit, while a fourth would have been in control of the van.

‘I can’t tell you who any of them are,’ Saul lied.

Narendra stared at him as if he didn’t believe a word.

‘The team you say were following me,’ Saul asked, ‘was it the same lot?’

‘Yes, it was.’

At that precise moment, Saul heard a low booming sound, not unlike a thunderclap. At first he thought it had come from the projector, then realized it came from somewhere outside the apartment. Narendra stood and listened, as if frozen, then suddenly broke into action, rushing to the door while directing a flow of dialogue at Eren.

‘What’s going on?’ asked Saul, following, but Narendra reached out a hand to stop him.

‘I don’t know,’ he muttered, then left the room.

Saul watched as the two men conversed in low, urgent tones. Eren was standing up now, his shotgun gripped ready in both hands. He moved away from the door until he was no longer directly visible to either man, and took the opportunity to push aside one corner of a lowered blind and peer out through the window behind.

He found himself looking directly along the entire length of the valley containing the city, towards the Newton Array at its far end. A dense cloud of grey and black smoke now rose above the Array, and was already beginning to pool under the giant canopy.

For one heart-freezing moment, Saul wondered if the Array had been sabotaged in the same way as the one on Galileo, thus stranding him light-years from home. But then the smoke thinned out a little, and he saw it rose not from the Array but from a tall building immediately next to it. Flames licked out of the building’s upper windows.

As he stared in awe, one side of another building, directly opposite the first, exploded into flames and black smoke, sending debris and glass tumbling downwards. A second low booming noise reached him a few seconds later, followed by the distinctive crackle of small-arms fire.

Saul tried to open the window, but found it wouldn’t budge. He pressed his forehead against the glass to peer down, and saw he was still a long way above the ground. Jumping out of there would only get him killed.