Once upon a time, there were four of them. And though each was good at a number of things, all of them were very good at games . . .

But when one of them is gunned down in a parking lot, the survivors become players in a very different kind of game - one that is played for the highest stake of all. Now they must draw on all their resources - not least millions of online gamers - to track down the killer.

Imagine a game with no boundaries. Waiting in a parking lot, sitting at your computer, walking down the street - you could be called at any moment, and you'd better be ready.

This is not a game. This is a novel that will blow your mind.