He looked down at his bound hands, then back at the door.

The phone in my hand stopped ringing, then immediately started again.

I pressed the receive button and held the cold metal to my ear.

“Adrian,” a voice said, low and distorted by a scrambler.

“Who is this?” I asked.

“You have five minutes to leave the cellar,” the voice said.

“And if I don’t?” I asked.

“The foundations of your house will become your grave,” the voice said.

The line went dead.

I looked down at the screen, then at the thick stone walls around us.

“What did they do, Caleb?” I asked, stepping closer to him.

Caleb shrank back, his shoulders tense.

“I don’t know what you’re talking about,” he said.

“They have a device,” I said. “Where is it?”

He swallowed hard, his Adam’s apple moving convulsively.

“I didn’t help them with that,” he said. “I only gave them access.”

“Where is it?” I repeated, grabbing his collar.

Another blow struck the door, harder this time.

The iron bolt warped slightly, bending under the pressure.

Daniel turned his head toward the sound, his gun drawn.