London: Gollancz, (2012).

First edition: States "First published in Great Britain in 2012 by Gollancz".
Number code starts with "1".
SIGNED and dated with a quote by the author to the title-page.
Fine in a fine dust jacket. 
£18.99 on the front flap. Jacket illustration by Dominic Harman.
First book in the Poseidon's Children series.

One-hundred-and-fifty years from now, the moon and Mars are settled, and colonies stretch all the way out to the edge of the solar system. But something has come to light on the Moon--secrets that could change everything--or tear this near utopia apart. (WorldCat).