From the front flap of the Tor first edition: "The Ship has roamed the universe for longer than any of the immortal crew can recall, its true purpose and origins unknown. It is larger than many planets, housing thousands of alien races and just as many secrets. Now one of those secrets has been discovered: at the center of the Ship is...a planet. Marrow. But when a team of the Ship's best and brightest are sent down to investigate, will they unlock the secrets of its creation -- or will they be destroyed by the forces that have hidden Marrow for millennia and bring doom to everyone on board?"
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