Beneath the dark ocean, a routine missile test turns tragic, and a politically splintered world spills out in oil, munitions and terrorism.

Submarine crew members Suze and Ole find and follow a data trail which leads to unrestrained power and greed.

The 4th Cohort is a story of global corruption and individual bravery.

NOTE: All the interior graphics in the eBook version on Amazon and Kindle are in color.