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A resourceful runaway alone in the wilds of Los Angeles, twelve-year-old Billy Straight suddenly witnesses a brutal stabbing in Griffith Park. Fleeing into the night, Billy cannot shake the horrific memory of the savage violence, nor the pursuit of a cold-blooded killer. For wherever Billy turnsfrom Hollywood Boulevard to the boardwalks of Venicehe is haunted by the u003ciu003echuck chucku003c/iu003e sound of a knife sinking into flesh. As LAPD homicide detective Petra Connor desperately searches for the murderer, as the media swarms mercilessly around the story, the vicious madman stalks closer to his prey. Only Petra can save Billy. But it will take all her cunning to uncover a child lost in a fierce urban labyrinthwhere a killer seems right at home. . . .