“He pointed to my hand and made a sweeping gesture. It took me a second to grasp his meaning. He was imitating the way I moved when I summoned.

"You want me to call the light?"

His face stayed blank. I let sunlight pool in my palm. "This?"

The glow seemed to galvanise him. He seized my hand and slapped it against his chest. I tried to draw away, but he held my hand in place. His grip was vice-like, made stronger by whatever monstrous thing the Darkling placed inside him.

I shook my head. "No."

Again, he slapped my hand against his chest, the movement almost frantic.

"I don't know what my power will do to you," I protested.

The corner of his mouth curled, the faintest suggestion of Nikolai's wry smile. I could almost hear him say, Really, lovely, what could be worse? Beneath my hand, his heart beat steady and human.

I released a breath. "All right," I said. "I'll try.”