Baron Zalor Revenant's plan to take control of the Confederation of Sovereign Systems is on the verge of completion. With the Abyssian Praetor Nero Graves trapped and powerless behind enemy lines, and Revenant's enemies playing right into his hands, it seems no one can stop him. What he doesn't realize is Cylus Keltan has reached the breaking point.Pushed around by his friends, and forced into a betrothal with his hated cousin, Cylus is on the edge. Forced to take a stand, it seems House Keltan is poised for a comeback, but is this boldness a result of new-found courage or alien mind-control? And just what is the link between the mysterious VoQuana and Baron Revenant? Will investigative reporter Cygni Aragón uncover the truth in time to stop the baron, or has she fallen into his trap?Allegiances will change, battles will erupt, and the deadly nano-weapon known as Siren will be unleashed in Keltan's Gambit!