"The hell is that."
Azi had managed to steal half a sweetroll from the kitchens and had come to take it up to Ru, who was working the cooling line, hauling buckets of water up from the sea to run through channels in the palace walls and bleed off heat from the lava below. She got to the roof right when the overseer rang the bell for a shift change, and the slaves handed off their ropes to the new shift and collapsed, breathing hard, talking in quiet voices. Azi palmed the roll to Ru as she walked past, not looking at her, to deliver the overseer a false message from his supervisor—she needed a reason to be here, after all. Ru shredded the roll with tiny motions and handed out the pieces to the others when the overseer's back was turned.
Then a massive snake with a mirror for a face appeared out of nowhere on the rooftop.
Slaves shouted and scrambled to their feet. The overseer backed away, gripping his club tightly.
Ru looked straight at Azi, then, of course, she went and touched it.
She vanished. Azi's heart stopped. She sprinted forward after her—