He slid down the wind like a hawk, watching his shadow swim across the sunlit buttresses of the mountain. Real hawks, hanging beneath him in the glassy air, veered away with sharp mews of surprise and indignation as he soared past, a lean black boy beneath a sky-blue wing invading their element.

Theo looped the loop and wished that Wren could see him. But Wren was far away, traveling the bird roads in her father’s airship. After they had escaped from Cloud 9, the mayor of Brighton’s airborne palace, and reached the Traction City of Kom Ombo, she had helped Theo find a berth aboard a southbound freighter. On the quay, while the airship was making ready to depart, they had said good-bye, and he had kissed her. And although Theo had kissed other girls, some much prettier than Wren, Wren’s kiss had stayed with him; his mind kept going back to it at unexpected moments like this. When he kissed her, all the laughter and the wry irony went out of her and she became shivery and serious and so quiet, as if she were listening hard for something he could not hear. For a moment he had wanted to tell her that he loved her, and ask her to come with him, or offer to stay—but Wren had been so worried about her dad, who had suffered some sort of seizure, and so angry at her mum, who had abandoned them and fallen with Cloud 9 into the desert, that he would have felt he was taking advantage of her. His last memory of her was of looking back as his ship pulled away into the sky and seeing her waving, growing smaller and smaller until she was gone.

Six months ago! Already half a year… It was definitely time he stopped thinking about her.

So for a little while he thought of nothing, just swooped and banked on the playful air, swinging westward with a mountain between him and Zagwa; a green mountain where rags and flags of mist streamed from the canopy of the cloud forest.