Opening her eyes, she worked out a path upwards and closed them again. Her supersensitive fingers and toes would tell her all she needed to know. Vision would just be a distraction.

After much trial and error she found a way around the cracked area and up onto the bend in the tower, here clotted with glassy dribbles of melted rock that had oozed through cracks in the walls and congealed on the outside. Some knobs were too hot to hold, and others would not have borne her weight, but she found a pair rooted deep in the wall that were as solid as a staircase, allowing her to rest for a while.

Ullii wasn't thinking about retribution now, for the climb had taken too much out of her. She no longer knew why she was climbing, only that Nish had come up and not gone down again. She didn't see how he could have lived but she wouldn't believe he was dead until she saw his body.

The other urge that kept her going was the need to hide from Chief Scrutator Ghorr. Ullii did not know how she was going to survive on her own, but she was never going back to Nennifer.

She was clinging on with her toes and the fingers of one hand, while she wiped the trickling moisture off her forehead, when she heard a glassy crack from inside the open watch-house at the top of the tower. It was followed by a muffled groan or curse.

It could have been the tormented rocks contracting as they cooled, but Ullii did not think so. It had sounded human, and very familiar. She sniffed but could smell only hot rock. If Nish was up there, the breeze was blowing his scent away. She scrabbled up to the seventh level. Her fingers were aching and she'd broken most of her toenails. Ullii needed to rest but drove herself on; she had to know. The wall and the embrasure above her were steaming, and a trickle of smoke issued from a deep fissure to one side of it.