The chill in that. The next thing. What was his next thing here? What was his passion? He didn’t know the answer to either question, knew only that there was comfort in the scratchiness of the pine needles against his face and the sleep-drenched, smoky smell of the dirt beneath him.

Morning came, and he huddled in Ghost Bird’s arms until she stirred, disengaged from him in a way that felt too final. Among the reeds, endless marsh, and mud, there came a suggestion on the horizon of burning, and a popping and rattling that could’ve been gunfire or some lingering memory of past conflict playing out in his head.

Yet still the blue heron in the estuary stalked tadpoles and tiny fish, the black vulture soared on the thermals high above. There came a thousand rustlings among the islands of trees. Behind them, on the horizon, the lighthouse could be seen, might always be seen, even through the fog that came with the dawn, here noncommittal and diffuse, there thick, rising like a natural defense where needed, a test and blessing against that landscape. To appreciate any of this was Ghost Bird’s gift to him, as if it had seeped into him through her touch.

But the unnatural world intruded, as it always did, so long as will and purpose existed, and for a moment he resented that. Ghost Bird and Grace were debating what to do if they encountered any remnants of the border commander’s troops. Debating what to do when they reached the tower.

“You and I go down,” Grace said. “And Control can guard the entrance.” This last stand, this hopeless task.

“I should go down alone,” Ghost Bird said, “and you should both stand guard above.”

“That would be against expedition protocols,” Grace said.

“That’s what you want to invoke here? Now?”

“What’s left to invoke?” Grace asked.

“I go down alone,” Ghost Bird said, and Grace gave her no answer.

Tactical not strategic, a phrase rising out of his back catalog of favorites. It seemed as obsolete as any of the rest, like the enormous frame of an old-fashioned bicycle.

He kept glancing up at that murky sky, waiting for the heavens to fall away and reveal their true position. But the mimicry remained in place, most convincing. What if the biologist had been wrong? What if the biologist in her writings had been a calmly raving lunatic? And then just a monster? What then?

They broke camp, used a stand of swamp trees as initial cover and surveyed the marsh, stared across the water of the estuaries. The smoke now billowed up at a sharp sixty-degree angle to add its own ash-silver roiling to the fog and form a heavier, weighted blankness. This alliance obscured the last of the blue sky and accentuated the crackling line of fire at the horizon parallel to them: waves of orange thrust upward from golden centers.

The pewter stillness of the channel of water in the foreground reflected the lines of the flames and the billowing of the smoke—reflected the nearest reeds, too, and doubled by reflection also the island that at its highest point showcased island oaks and palmetto trees, their trunks white lines lost in patches of fog.