The first in an exciting new mystery series featuring ex-police dog handler Charlie Whelan - When two young sisters run away on Dartmoor, Charlie Whelan and his German shepherd, Taz, are called into action, and a desperate search quickly turns up one of the girls. However, rather than showing relief at being rescued, she seems terrified. Darkness halts their hunt for her elder sister, and Charlie returns home with one distressing question on his mind: just what were the girls running from?