Caleb Mitchell is a human weapon, engineered into a biologically enhanced killing machine in the war with the alien Tahni. The war is long over and now he just wants to live a normal life as a constable on his homeworld of Canaan...but his life is torn apart when a Corporate Council mineral scout comes to him with a tale of discovering incredibly advanced alien technology from the fabled race known only as the Predecessors. Someone in the monolithic, power-hungry Corporate Council doesn't want that story to get out...and they'll kill anyone to stop it, including Caleb and his family.

Caleb Mitchell and his friends return in the sequel to the thrilling cyberpunk space opera Birthright! Former military super-commando Cal Mitchell is enjoying the pastoral life on his remote star colony home of Canaan, having put the fight against the Corporate Council behind him. But his past comes back to haunt him when a hired assassin makes an attempt on his life. On the heels of this threat, his old friend and former partner Deke Conner and DSI agent Kara McIntire arrive to warn him of a new conspiracy by old enemies, and this time the stakes are no lower than the fate of the galaxy. The hunt is on for the fabled Northwest Passage, the extra-dimensional pathway that will give its discoverer access to the rest of the universe…and perhaps to the magical technology of the long-lost Predecessors, an ancient race of aliens who left behind an incredible legacy of terraformed worlds and wormhole passages. The quest for the Northwest Passage will take Caleb and his friends and family to the farthest reaches of the Commonwealth and beyond into the unknown, where the prize for success may be an even darker fate than the price of failure.

Caleb Mitchell, Deke Conner and Kara McIntire return in the latest novel in the star-spanning Birthright series. Travelling back from their mission to the Northwest Passage, having closed off that corridor into our part of space to alien invasion, Cal Mitchell and his friends are now faced by a threat closer to home. When the former DSI commando Robert Chang, known as Cutter, had deceived them into helping him find the legendary Northwest Passage, he'd used all of his resources for his set-up—-including replacing a few key military officers with genetically duplicated copies made in his lab and under his control. Cutter is gone, but his organization remains...and so do the replacements. Now, someone Cutter left behind is using those replacements in an attempt to reignite the war between the human Commonwealth and the Tahni Empire. Tahni insurgents have launched terrorist strikes against the Commonwealth military, initiating a cycle of reprisal and escalation, spurred on by the duplicates in the military. When Cal, Deke and Kara bring together what remains of their old Glory Boy commando group in an effort to investigate, they're attacked by both sides. It will take all their skill to overcome the conspiracy and expose the ones behind it. And to convince the Tahni that the enemy of their enemy is not necessarily their friend...