There are 3 books in the Coastal Guardians series. The newest book is The Deadly Shallows which came out in 2022.

1
The Killing Tide

Book cover of The Killing Tide
When one Coast Guard officer is found dead and another goes missing, Coast Guard Investigative Service special agent Finn Walker faces his most dangerous crime yet. His only clues are what little evidence remains aboard the dead officer's boat, and the direction the clues point to will test Finn and…
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2
The Crushing Depths

Book cover of The Crushing Depths
When an accident claims the life of an oil-rig worker on the first drilling platform off the North Carolina coast, Coast Guard investigators Rissi Dawson and Mason Rogers are sent to take the case. Tensions surrounding the oil rig are high and the death has everyone on edge. Environmental activists…

3
The Deadly Shallows

Book cover of The Deadly Shallows
A deadly attack.
A stolen weapon capable of immense destruction.
A painful secret that threatens to tear two hearts apart.

CGIS Agent Noah Rowley is rocked to the core when several of his valued team members come under fire on his Coast Guard base. He and his remaining team race…