The men who sent him to die wear American flag pins.

Major Zane Bishop spent a career running missions that never had names. Delta Force—the kind of work commanders reach for when failure is not an option. Then a safehouse job in Northern Iraq went wrong in a way only inside knowledge could arrange—timing, routes, blind spots—and his team didn’t make it out.

For a year, Bishop stays dead on the Portuguese coast. Until a CIA officer walks into his bar and offers him a way back.

No flag. No oversight. No record of existence. A deniable, privately funded unit built to strike threats too politically radioactive for anyone in uniform to touch.

Bishop takes the offer—not for redemption, but for leverage.

The man who signed his death warrant is now a U.S. Senator—and he’s hunting the unit that pulled Bishop out of the grave.

Perfect for fans of Brad Taylor and Jack Carr, Obsidian by Sam Stone is a high-octane military thriller where war is fought in the shadows and the most dangerous enemies wear the uniform of the country they’ve already betrayed.