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This page lists the Deep Six books by Julie Ann Walker in order, with quick summaries, series background, and help finding the best place to dive in.

Last updated: July 3, 2026

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Deep Six books in publication order

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7 books

1

Hell or High Water

by Julie Ann Walker

2015

Former SEAL Leo Anderson would rather hunt the lost Santa Cristina than return to covert warfare. Then CIA agent Olivia Mortier needs his help, and a missing uranium capsule turns a treasure hunt into a crisis.

2

Devil and the Deep

by Julie Ann Walker

2016

Maddy Powers cannot forget the former SEAL who disappeared after one unforgettable kiss. When she is taken hostage in the Caribbean, Bran Pallidino and the Deep Six crew drop everything to bring her home.

3

Hot as Hell

by Julie Ann Walker

2016

Harper Searcy never meant to fall for Navy SEAL Michael Wainwright, but one night changed everything. When terrorists attack the U.S. embassy where she works, he is the only man she trusts to come for her.

4

Ride the Tide

by Julie Ann Walker

2020

Burned by divorce and tired of battle, Mason McCarthy wants quiet, not historian Alexis Merriweather talking circles around him. But while searching for the Santa Cristina, a threat from his past drags them into danger.

5

Deeper Than The Ocean

by Julie Ann Walker

2021

Wolf Roanhorse knows he blew his chance with Christina Szarek, but working side by side on the Santa Cristina hunt leaves little room to hide. Worse, someone wants Chrissy silenced for good.

6

Shot Across the Bow

by Julie Ann Walker

2021

Charm comes easy to Spiro Delgado until Mia Ennis boards the hunt for the Santa Cristina and unsettles everything. After a crash leaves them stranded, Mia must trust him before the men hunting them close in.

7

Dead in the Water

by Julie Ann Walker

2022

Doc Simmons has treasure problems, a hurricane on the way, and no patience for attorney Camilla D'Angelo. Then danger converges on Wayfarer Island, and the woman who gets under his skin may also be his best ally.

Deep Six books in chronological order

  1. Book cover for "Hell or High Water"

    Hell or High Water

    by Julie Ann Walker

    2015Deep Six, Book 1
  2. Book cover for "Hot as Hell"

    Hot as Hell

    by Julie Ann Walker

    2016Deep Six, Book 2
  3. Book cover for "Devil and the Deep"

    Devil and the Deep

    by Julie Ann Walker

    2016Deep Six, Book 3
  4. Book cover for "Ride the Tide"

    Ride the Tide

    by Julie Ann Walker

    2020Deep Six, Book 4
  5. Book cover for "Deeper Than The Ocean"

    Deeper Than The Ocean

    by Julie Ann Walker

    2021Deep Six, Book 5
  6. Book cover for "Shot Across the Bow"

    Shot Across the Bow

    by Julie Ann Walker

    2021Deep Six, Book 6
  7. Book cover for "Dead in the Water"

    Dead in the Water

    by Julie Ann Walker

    2022Deep Six, Book 7

Series background & context

Deep Six takes Julie Ann Walker's romantic suspense style out of the city and onto the water. The series follows a group of former Navy SEALs who leave active duty and form Deep Six Salvage, a treasure-hunting operation built around the search for the long-lost Spanish galleon Santa Cristina. That gives the books a great hook right away: these men are no longer fighting wars for the government, but trouble keeps finding them anyway.

The sea is never just scenery.

The series is anchored on Wayfarer Island, the small Caribbean home base the team works from while diving wrecks, chasing leads, and trying to strike it rich. The tropical setting changes the feel of the suspense. Instead of dark alleys and city safe houses, you get open water, dive sites, storms, boats, hidden cargo, and islands that can feel beautiful and exposed at the same time. Walker uses that setting well. The ocean adds freedom, but it also makes every mistake feel bigger.

The core group is made up of men who have trained together, served together, and now trust each other the way only old teammates can. Leo Anderson, Bran Pallidino, Mason McCarthy, Wolf Roanhorse, Spiro Delgado, and Doc Simmons each get their turn at center stage, and each book pairs one of them with a heroine who brings her own skills, history, and trouble. Olivia Mortier, Maddy Powers, Alexis Merriweather, Christina Szarek, Mia Ennis, and Camilla D'Angelo are not interchangeable love interests. They change the stakes of the story and often push the men to deal with parts of themselves they would rather ignore.

What links the books is the ongoing treasure hunt and the reality that the Santa Cristina is not the only valuable thing on the water. Along the way the team runs into kidnappings, radioactive material, pirates, drug runners, legal roadblocks, old enemies, and hurricanes. That means the romance in each book develops inside a larger adventure plot, not off to the side of it. The danger is shared, and the series is better for that.

These books feel a little more sun-soaked and adventurous than Walker's Chicago stories, but they still have the same interest in loyalty, attraction, and capable people under pressure. If Hell or High Water sets the mission, later books like Devil and the Deep, Ride the Tide, and Deeper Than The Ocean keep widening the emotional and physical map.

If you like ex-military teams, tropical suspense, buried treasure, and romances that come with real forward momentum, Deep Six is an easy series to settle into. It helps to start with Hot as Hell or Hell or High Water, because the group dynamic and the ongoing hunt build from book to book. By the time the later threats roll in, Wayfarer Island feels less like a backdrop and more like part of the cast.

Edited by

Richard Reis

Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.

Anurag Ramdasan

Lead investor at 3one4 Capital whose startup expertise and love for books helped shaped MRB and its growth.

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