They must have located us in the apartment with body-heat sensors, then mined the whole wall with limpets. Taking no chances this time. The commando that came through the ruined wall was stocky and insect-eyed in full gas attack rig, hefting a snub-barrelled Kalashnikov in gloved hands.

Ears ringing, still on the floor, I flung the H grenade up at him. It was unfused, useless in any case against the gas mask, but he didn’t have time to identify the device as it spun at him. He batted it off the breech of his Kalashnikov and stumbled back, eyes wide behind the glass panels of the mask.

“Fire in the hole.”

Sarah was down on the floor beside the bed, arms wrapped around her head and sheltered from the blast. She heard the shout and in the seconds the bluff had bought us she popped up again, shard gun outflung. Beyond the wall I could see figures huddled against the expected grenade blast. I heard the mosquito whine of monomolecular splinters across the room as she put three shots into the lead commando. They shredded invisibly through the attack suit and into the flesh beneath. He made a noise like someone straining to lift something heavy as the spider venom sank its claws into his nervous system. I grinned and started to get up.

Sarah was turning her aim on the figures beyond the wall when the second commando of the night appeared braced in the kitchen doorway and hosed her away with his assault rifle.

Still on my knees, I watched her die with chemical clarity. It all went so slowly it was like a video playback on frame advance. The commando kept his aim low, holding the Kalashnikov down against the hyper-rapid-fire recoil it was famous for. The bed went first, erupting into gouts of white goosedown and ripped cloth, then Sarah, caught in the storm as she turned. I saw one leg turned to pulp below the knee, and then the body hits, bloody fistfuls of tissue torn out of her pale flanks as she fell through the curtain of fire.