Series information from Goodreads.com.

A young woman goes missing in Silicon Valley and her father hires Colter Shaw to find her. The son of a survivalist family, Shaw is an expert tracker. Now he makes a living as a "reward seeker," traveling the country to help police solve crimes and private citizens locate missing persons. But what seems a simple investigation quickly thrusts him into the dark heart of America's tech hub and the cutthroat billion-dollar video-gaming industry. When another victim is kidnapped, the clues point to one video game with a troubled past-- The Whispering Man. In that game, the player has to survive after being abandoned in an inhospitable setting with five random objects. Is a madman bringing the game to life? -- adapted from jacket