“I should,” I said. “It’s less trouble, in the long run.”

“I’m fine, by the way,” said Mr. Stab.

“Never doubted it,” I said, not looking around.

We made our way slowly and cautiously through the guts of Truman’s underground base. Everything was a mess: furniture overturned, papers scattered, doors left open to secure areas. There were no people anywhere. Just empty rooms and abandoned corridors. Half the lights weren’t working, and strange shadows loomed up everywhere. As we got deeper in, we found workstations where computers and other technology had been ripped apart and gutted. Great rents began appearing in the steel walls, long and jagged as though made by claws, with wiring and cables hanging out like entrails from open wounds. And the only sounds we heard in the whole base were the ones we brought with us.

Finally, as we neared the centre of operations, we started finding bodies piled up in careless heaps, as though they’d just been dragged there and dumped, out of the way. The were signs of struggle now, to show they hadn’t gone quietly to their deaths. Bullet holes in the walls, scorch marks from grenades, the remains of improvised barricades. They’d put up a fight, only to end up like their computers, torn apart, gutted; harvested. Broken open for their parts. Whole organs were missing, and hands, and eyes. Blood and discarded offal lay all around, still steaming and stinking on the cool, still air.

Mr. Stab checked the bodies for details. No one else wanted to get close enough.

“They did this to complete their tower,” I said, because someone had to put it into words. “Technology and . . . organic components, to finish the job. Because they were in a hurry. Because they knew we were coming.”

“Don’t you dare blame yourself,” Molly said immediately. “None of this is your fault. Manifest Destiny brought this on itself by allying with the Loathly Ones. Come on, let’s find Truman.”

“How do you know he’s still alive?” said Giles.

“Because rats like him always find a hole to hide in,” said Molly.

It didn’t take long to track him down. We just followed the signs on the walls to his private office, and sure enough there were more dead men piled up outside the locked and no doubt barricaded door. A green light showed above the door, indicating that the leader was IN. And a single security camera swivelled back and forth, looking us over with its little red light. I pounded on the door with my fist.

“You know who this is, Truman. Surprisingly enough, I’m not here to kill you. In fact, I’m probably your best chance of getting out of this mess alive. Open up, so we can talk about the Loathly Ones.”

“Go away!” screamed a voice from inside, shrill and cracked. “You can’t fool me! You’re not people! Not anymore!”