"Escape or die trying... The killer is changing the rules. One murder at a time . . . You wake up all alone, in the middle of a forest, miles from anywhere. Beside you lie five objects - a lighter, grease, picture-frame wire, a piece of silk, a bottle of water - which you will need to use if you want to survive. You've been taken by the Whispering Man and there is no escape. He makes the rules and nobody ever gets out alive. Enigmatic investigator Colter Shaw is fighting to stop the murders. But another victim has been snatched from her family and he's running out of time. In the darkest corner of Silicon Valley, a new breed of killer is emerging: someone with a deadly obsession, whose twisted game is spiralling out of control."--Publisher description.