9780446533164 | Large print edition (Grand Central Pub, January 1, 2004), cover price $39.99 | About this edition: Bored with their jobs as senior staffers to a respected congressman, Matthew Mercer and Harris Sandler become involved in the clandestine Zero Game, but when someone close to them turns up dead, they discover the sinister intent of the 'game.

9780446530989 | Grand Central Pub, January 1, 2004, cover price $25.95 | About this edition: Bored with their jobs as senior staffers to a respected congressman, Matthew Mercer and Harris Sandler become involved in the clandestine Zero Game, but when someone close to them turns up dead, they discover the sinister intent of the 'game.

9781455519705 | Grand Central Pub, September 25, 2012, cover price $5.99 | About this edition: The New York Times bestselling author of The Millionaires and The First Counsel returns to Wash-ington, D.

9781455508198 | Grand Central Pub, October 1, 2011, cover price $9.99

9780446612111 | Reprint edition (Grand Central Pub, February 1, 2005), cover price $7.99 | About this edition: Bored with their jobs as senior staffers to a respected congressman, Matthew Mercer and Harris Sandler become involved in the clandestine Zero Game, but when someone close to them turns up dead, they discover the sinister intent of the 'game.

9780446613767 | Hachette Book Group USA, August 1, 2004, cover price $7.99

9780759508569 | Grand Central Pub, January 20, 2004, cover price $7.99 | About this edition: Bored and disillusioned with their jobs as senior staffers to a respected congressman, Matthew Mercer and Harris Sandler become involved in the clandestine Zero Game, but when someone close to them turns up dead, they discover the sinister intent of the 'game' and realize that they are intended to become the game's next victims.

9781600242496 | Abridged edition (Hachette Audio, November 13, 2007), cover price $14.98

9781586216030 | Abridged edition (Hachette Audio, December 1, 2003), cover price $31.98 | About this edition: Bored with their jobs as senior staffers to a respected congressman, Matthew Mercer and Harris Sandler become involved in the clandestine Zero Game, but when someone close to them turns up dead, they discover the sinister intent of the 'game.

9781586216023 | Abridged edition (Hachette Audio, December 1, 2003), cover price $25.98 | About this edition: Bored with their jobs as senior staffers to a respected congressman, Matthew Mercer and Harris Sandler become involved in the clandestine Zero Game, but when someone close to them turns up dead, they discover the sinister intent of the 'game.

9781586216047 | Unabridged edition (Hachette Audio, December 1, 2003), cover price $44.98 | About this edition: Bored with their jobs as senior staffers to a respected congressman, Matthew Mercer and Harris Sandler become involved in the clandestine Zero Game, but when someone close to them turns up dead, they discover the sinister intent of the 'game.

9781417757640 | Turtleback Books, February 1, 2005, cover price $18.45 | About this edition: Bored with their jobs as senior staffers to a respected congressman, Matthew Mercer and Harris Sandler become involved in the clandestine Zero Game, but when someone close to them turns up dead, they discover the sinister intent of the 'game.