When Paul Melko’s “The Walls of the Universe” first appeared in Asimov’s Science Fiction, readers voted it as the best novella of 2006. It was also a Nebula award nominee.

With good reason.

Melko’s story of travel between alternate universes is intriguing and thought-provoking. As much as a work of fiction can be, it contains realistic characters who use the technology as one would expect real people to – to make a lot of money.

Now, expanded out to nearly 400 pages, with a part two that adds a more sinister cast to the plot, Melko has offered a well-crafted book that should appeal to science fiction purists – the science here is the central character.

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