I think I will pass on reading this one (found via Graeme's Fantasy Book Review)
In the tradition of the blockbuster sensation Pride and Prejudice and Zombies, Tor is proud to offer up The Adventures of Tom Sawyer and the Undead. Taking the original coming of age classic, Don Borchart has inflicted it with a taste of the macabre, as the world has been overrun by a Zombie epidemic that in the South has been dubbed "Zum." Where in the original text you would find Tom Sawyer duping his friends into whitewatching [sic] the fence, now in that same scene, Tom and his friends sharpen the edges of the fence to ward off Zombie approaches. Where Tom Sawyer doesn't have to fake his dealth [sic], just merely pretends to be a Zum. The murderous Injun' Joe is the first of the rising self-realized zombies, who know what they are and are even more vicious for it...
Tom Sawyer doesn't need zombies. And "Injun' Joe" is a problematical enough in the original, without being a zombie.
On the other hand, Dickens could use a few vampires. Like Estella in Great Expectations--she is pretty much un-dead already.