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“An interesting concept developed into an exciting read” (Kirkus Reviews)—the final novel in a groundbreaking international thriller trilogy about a deadly game that blurs the line between reality and fiction.

Henrik “HP” Pettersson could never have imagined he’d become entwined in a chaotic and dangerous game of life and death when he picked up a lost cell phone on a commuter train. He thought he’d escaped.

Now, his paranoia quickly grows to mania, as he is convinced that the Game Master an...