The USS Obama is back on a war footing, but the threat is bigger than anyone could have imagined. NCIS agent Jennifer Hobbs is racing against the clock to stop a deadly enemy who has declared war on the United States by targeting its revolutionary new space program. As the stakes climb toward a nuclear conflagration, every second counts and one wrong move could trigger global disaster.

The Obama is taken aback when torpedoes are fired from a German U-boat, crewed by a Moroccan crew. And in France, a ruthless, ambitious man seeks to destroy the space program for his own malevolent ends.

Hobbs is also distracted by events back home. Her father, former Admiral Bill Hobbs, is fighting dementia in a nursing home.

From the depths of the Pacific to the frontlines of space, this is a high-octane, edge-of-your-seat sequel to Pacific Deeps.