The night wind cut through the skin like a thin blade, and the rushing sound of the river accompanied Joe’s staggering steps as he carried Eliana on his back. His sister’s body had grown limp, her legs were injured, and dried blood stained her wrists. Joe himself was barely able to stay on his feet. But one thing kept him going: Eliana had to survive.

“We’re… we’re almost there, El,” Joe muttered, though he had no idea where they actually were.

Eliana could only tighten her grip on her brother’s shoulders. Her eyes still couldn’t see, but she recognized the direction of the wind, the sound of water, and Joe’s...