Prologue

Despite his best efforts, David couldn't keep the stones from singing as he sprinted past. From behind, they let out a deep warbling that echoed throughout the valley. He grit his teeth in frustration. Overhead, a falcon let loose a piercing shriek in response, and for the fifth time that day, David's hand darted to the gun in his inner chest pocket. And once again, he caught himself at the last moment.

Better to keep running.