The fourth book in the popular Star Carrier science fiction series, Deep Space by Ian Douglas is an action-packed tale of humankind's struggle to bring down an evil empire that spans the universe.

Twenty years after the fragile truce with the Sh’daar, Koenig is now President of the USNA, and Gray is skipper of the CVS America... soon to be promoted to commander of the entire battle group, Koenig’s old position, and one which he might not be ready for. The truce with the alien Sh’daar is unraveling as many predicted, and Humankind still knows little about them, or what they are.