Grand Central Publishing, a division of Hachette Book Group, has partnered with authors Brad Meltzer, Douglas Preston and Lincoln Child for a cross promotional effort to promote eBooks. The publisher is releasing new novels from these authors as eBooks, and as part of the purchase, is including a complimentary backlist novel from the other author.

So for example, Brad Meltzer’s The Inner Circle bonus edition eBook will include Preston and Child’s 2002 novel The Cabinet of Curiosities as part of the purchase. And the bonus edition of Preston and Child’s Gideon’s Sword will include Brad Meltzer’s 2005 novel The Zero Game.

The promotion, which is running indefinitely, is available in any eBook store.