The most unvarnished, uncompromising and realistic police drama ever returns for another hard hitting season. McNolty has been demoted to harbor patrol, Daniels is in the police archive dungeon, Prez is chafing in the suburbs and Gregs is stuck behind a desk. Meanwhile, on the docks of the Baltimore harbor, the rank and file scrounge for work and the union bosses take illegitimate measures to reinvigorate business, but a horrific discovery is about to blow the whole port inside out. While the detail is on ice, a new case begins...

Episodes comprise:

1. Ebb Tide
2. Collateral Damage
3. Hot Shots
4. Hard Cases
5. Undertow
6. All Prologue
7. Backwash
8. Duck and Cover
9. Stray Rounds
10. Storm Warnings
11. Bad Dreams
12. Port in a Storm