Miranda had been certain that the end of the world would begin like this-without warning, but with fire. Behind them, the sky glowed red as flames and plumes of sparks rose into the night sky. The university at Sheridan was burning.

Holding Mercy’s little hand, Miranda was terrified she might lose the girl in the dark. They had been running for hours, dashing blindly through the pine forest, pushing their way past unseen branches. Beneath the laden boughs, the snow was deep. Miranda fought through drifts higher than her knees, breaking a path for the little girl and the old professor.

Struggling somewhere behind, Arcadius called out, “Go on, go on, don’t wait for me.”

Hauling the heavy pack and dragging the little girl, Miranda was moving as fast as she could. Every time she heard a sound or thought a shadow moved, Miranda fought back a scream. Panic hovered just below the surface, threatening to break free. Death was on their heels and her feet were anchors.

Miranda felt sorry for the child and worried that hauling her forward was hurting her arm. Once, Miranda had pulled too hard and dragged Mercy across the surface of the snow. The girl had cried when her face skimmed the powder, but her whimpering was short-lived. Mercy had stopped asking questions, stopped complaining about being tired. She had given up talking altogether and trudged behind Miranda as best she could. She was a brave girl.

They reached the road and Miranda knelt down to inspect the child. Her nose ran. Snowflakes clung to her eyelashes. Her cheeks were red, and her black hair lay matted with sweat to her forehead. Miranda took a moment to brush several loose strands behind her ears while Mr. Rings kept a close eye on her. As if he were a fur stole, the raccoon curled around the girl’s neck. Mercy had insisted on freeing the animals from their cages before leaving. Once released, the raccoon had run up Mercy’s arm and held tight. Apparently, Mr. Rings also sensed something bad was coming.