"We've been walking for eleven billion hours," Piper complained. Her steps were getting progressively slower and heavier.

"When did you become such a drama queen?" I asked, tossing her a teasing grin.

Instead of laughing or smiling like I'd hoped she would, she scowled at me, her brows furrowing with annoyance. While we hadn't been walking for eleven billion hours, we had been walking for quite a long time.

We'd woken just as the sun rose, wiped any ...