When Dr. Rodney McKay unlocks an Ancient mystery on a distant moon, he discovers a terrifying threat to the Pegasus galaxy. Determined to disable the device before it's discovered by the Wraith, Colonel John Sheppard and his team navigate the treacherous ruins of an Ancient outpost. But attempts to destroy the technology are complicated by the arrival of a stranger.

About the Author

Martha Wells is the author of fourteen fantasy novels, including The Wizard Hunters, The Ships of Air, The Gate of Gods, The Element of Fire, and the Nebula-nominated The Death of the Necromancer. Her newest novel, The Cloud Roads, was published in March 2011 by Night Shade Books, and the sequel, The Serpent Sea, in January 2012. Her next fantasy novels will be The Siren Depths, to be published by Night Shade in December 2013, and Emilie and the Hollow World, to be published by Strange Chemistry Books in April 2013. She has had short stories in the magazines Black Gate, Realms of Fantasy, Lone Star Stories, and Stargate Magazine, and in the Tsunami Relief anthology Elemental. She has also written two media-tie-in novels, Stargate Atlantis: Reliquary and Stargate Atlantis: Entanglement.