‘No.’ Ramiro had been relying on his helmet and the safety lights; with the cooling system dead they shouldn’t be using any of the Surveyor’s photonics gratuitously, but well-lit surgery was hardly an indulgence. When Agata switched on the main lights, Ramiro felt a sickening disjunction between the reassuring familiarity of the room – intact and unblemished, as if nothing had happened – and the condition of his guest.

Tarquinia found a long, sharp scalpel and dusted it with astringent. ‘Can you get on the other side and hold him still?’ she asked Ramiro. ‘The straps won’t stop him wriggling, and even if he doesn’t wake he might move instinctively.’

‘Do you want me to hold his leg?’ Agata asked.

Tarquinia said, ‘Good idea.’

Agata joined them. The three of them braced themselves awkwardly over the bed, holding different parts of the same rope for support. Ramiro glanced down at the tunnel in Azelio’s flesh; a luminous discharge was oozing into the hole that the fragment had made.

Tarquinia said, ‘Everyone secure? I’m going to start.’

She plunged the scalpel into Azelio’s thigh, a scant back from the surface of the wound, and started carving a cylinder of her own. Azelio’s torso twitched under Ramiro’s arm, then he opened his eyes and started bellowing. Even without air to carry the sound, the cry that passed from flesh to flesh was piteous.

Ramiro pushed harder against the rope, pinning the poor man down more firmly. It’s almost done, he wrote on his forearm, hoping that Azelio could read the ridges through the fabric separating their skin. Be strong, it won’t be much longer. He locked his gaze on Azelio’s, trying to convey some reassuring sense that his tormentors knew what they were doing.

Azelio kept screaming, but he managed to suppress his struggling. Tarquinia completed the incision. She used a pair of forceps to pull the tube of damaged flesh out of his thigh, swabbed the spilt liquid with a cloth, then dragged herself quickly out of the room. Agata fumbled in the medical kit and found a syringe of analgesic; she injected the powder in three sites around the wound. Ramiro knew from experience that it would take a few lapses to have much effect, but Azelio responded with relief just to the sight of it being administered.

Tarquinia returned. ‘Any of the other wounds need ablating?’ It was lucky that Azelio couldn’t hear her. Ramiro looked over the four remaining holes.

‘I don’t think so. But someone should stay with him to monitor them.’

Agata said, ‘I’ll do that.’

Tarquinia inclined her head in agreement. ‘Ramiro and I will start work on the repairs.’

‘Are you up to that?’ Ramiro already felt guilty that he’d stood by and let her do the surgery.