Neptune's Fortune: The Billion-Dollar Shipwreck and the Ghosts of the Spanish Empire

by Julian Sancton

The riveting true story of a legendary Spanish galleon that sunk off the coast of Colombia with over $1 billion in gold and silver—and one man’s obsessive quest to find it—from the New York Times bestselling author of Madhouse at the End of the Earth

Roger Dooley wasn’t looking for the San Jose. But an accidental discovery in the dusty stacks of a Spanish archive in the 1980s led him to the story of a lifetime—the journey of a ship that had gathered a mountain of riches from the New World for a long-awaited delivery to the King of Spain nearly three centuries earlier. But that ship, the galleon San Jose, never reached its destination. Instead, the Spanish treasure fleet was drawn into a pitched battle with British ships of war off the coast of Cartagena. When the smoke cleared, the San Jose had disappeared into the ocean.

Though a diver at heart, Dooley was an unlikely candidate to find the San Jose. Half Cuban by birth, he lived a life that stretched from the ballfields of Brooklyn to the shores of Castro’s Havana at the dawn of revolution, where he would help birth a fledgling nation’s diving program and make films with the likes of Jacques Cousteau before finding himself placed on an international watch list and barred from the United States. Dooley had little in the way of serious credentials, yet his tenacity and single-minded devotion to finding the San Jose—led him to breakthroughs once thought impossible. As he jousted with famous treasure hunters and well-funded competitors, Dooley ultimately homed in on a patch of sea that might contain a three-hundred-year-old shipwreck—or nothing at all.

Neptune's Fortune plunges into a rarified world through the eyes of an idiosyncratic protagonist, one whose work would spark the hopes of presidents and make real the dreams of a nation. This tale of temerity and treasure is a one-of-a-kind story of a lost fortune and the decades-long quest to shine a light on the bounty at the bottom of the sea.

Genres: Nonfiction, History, Biography, Adventure, Spain, Audiobook, Nautical

401 pages, Kindle Edition

First published January 27, 2026

About the author

Julian Sancton has written for Vanity Fair, Departures, Esquire, The New Yorker, Wired, and Playboy, among other publications. He spent most of his childhood in France and attended Harvard University, where he studied European history. He lives in Larchmont, New York, with his partner, Jessica, and their two daughters.

Reviews

[Brendan (History Nerds United) · Rating 5 out of 5]

I had high hopes for Julian Sancton's newest, Neptune's Fortune. After all, Madhouse at the End of the Earth is a perfect mixture of claustrophobic horror and perseverance in the age of polar exploration. It was a tight narrative, which left me, a shipwreck addict, supremely satisfied. Of course, seeing that Sancton was taking on a different shipwreck meant I knew what I was going to get all over again. I was psyched.

Instead, Sancton went the complete opposite way. Neptune's Fortune is a story that crosses hundreds of years, tackles international politics, and follows a man who may not be able to be trusted. This isn't Madhouse Part 2. This is completely different and still utterly fantastic. I demand that Sancton never write about anything but shipwrecks. (Please.)

This book is three parts. The first tells the story of how a Spanish galleon, the San José, ends up on the seafloor with over a billion dollars in gold and silver. While this is only the first part of the book, Sancton is not rushing. The battle was so engaging I literally stayed up too late to make sure I finished that part. The second part follows Roger Dooley. Who is Roger Dooley? Probably easier to say what he isn't. Let's just say he is a treasure hunter. For good or bad, well, like everything else about him, it's complicated. The third part follows Dooley as he goes searching for the San Jose.

Literally nothing about this story is simple. Did the San José blow up? Is Dooley a liar or an obsessive genius? Even if the San José is found, who actually owns it? There are so many ways to take this narrative and Sancton always makes the right choice. It's a must-read.

(This book was provided as an advance copy by NetGalley and Crown Publishing.)

[Michael Schramm · Rating 4 out of 5]

While not as riveting as Julian Sancton’s inaugural effort, the highly enjoyable “Madhouse At The End of The World”, this is nonetheless an engaging story on one man’s quest, Cuban-American Roger Dooley, to locate what can be considered the mother lode in the era of galleons of the Spanish treasure fleets of the 16th-17th century period, the vessel San Jose.

The book is divided into three parts: the story of how San Jose came to fall victim to an English fleet of marauders seeking to hijack the enormous stash of gold and silver aboard. Part 2, which bogs things down a bit is a profile of the 5 most illustrious shipwreck hunters/marine salvage specialists, focusing on the discovery of the infamous Atocha in 1968, as well as Nuestra Señora de la Concepcion and others.

Part 3 focuses on Dooley’s obsessive hunt to locate the San Jose, which, aided by then new technology courtesy of Woods Hole Oceanographic Institute as well as archival documents and maps, he manages to locate. The story ends on a bit of a bittersweet note, as the reader is apprised of all the geopolitical pitfalls that come with discovering a shipwreck. Who benefits? The nation of origin…the country which served as the port of departure…the nation whose territorial waters the vessel resides in? What about the nation(s) that had its inhabitants exploited to mine for the gold and silver contained therein? It’s all a classic study of being careful what you wish for and how politics and money become embroiled when all one wanted (in the case of Dooley) is to preserve and honor the past.

[Alan Chrisman · Rating 4 out of 5]

True story of ship carrying gold, silver back from South America during Spanish Empire in 1700s sunk by Brit. Navy. Long a legend where it might be with its precious cargo worth billions. But as much a story of one man spent his whole life trying to find it-a self-taught American/Cuban, worked for Castro, made films with Jacques Cousteau, never gave up in his determination despite many setbacks. We're rooting to see if he finally pulls it off and if he gets his reward.

[Nel · Rating 2 out of 5]

i liked part 1 retelling how the galleon ended up sunk, but i couldnt get into the rest.

[Kim McGee · Rating 4 out of 5]

A mostly self taught diver and ocean archeologist yearns of finding the big treasure. From his childhood in Cuba to moving to the U.S. Roger Dooley was determined to find the largest Spanish sunken treasure shipwreck in history. The problem is he had to locate it without knowing the general area where it sank, searching for any documents over 300 years ago, then finance it and then put a claim on it before local governments or other treasure seekers could. In superb storytelling Julian Sancton shares Roger Dooley's life and obsession with finding the San Jose as well as the history of Europe's thirst for gold and silver that led to the fateful battle and ship sinking and the early history of deep sea wreck exploration and treasure salvage. The one and a million chance he would find it and the toll it would take. Armchair history buffs, wannabe treasure seekers and curious readers who enjoy a biography of a man who wouldn't give up on his dream. It is an enjoyable and thrilling journey that readers of the Key West Florida treasure hunters, the search for the Titanic and THE WIDE WIDE SEA will enjoy. My thanks to the publisher for the advance copy.

[Brandon Gryder · Rating 3 out of 5]

An exhaustive (and exhausting) tale of the shipwreck of the Spanish galleon San Jose. Unfortunately the book focuses on the legal minutiae of treasure hunting instead of the actual discovery of an important shipwreck. In hindsight I probably should have expected this.

[Mara · Rating 5 out of 5]

I knew nothing about the Spanish galleon San José (or its wreck) before I picked up this book, but Julian Sancton's writing has me hooked from start to finish. Got goosebumps several times, maybe almost shed a tear. I will protect Roger Dooley with my life, why does this man not have a Wikipedia page!
I'm already looking forward to whatever Sancton will dive into next.

[Margo · Rating 4 out of 5]

Thanks to NetGalley for the e-ARC -- this is a tricky one to rate because the first part of the book, featuring the history of the Spanish Armada's routes through the Caribbean as well as the engagement with an English squadron that ultimately sank the San Jose was excellent. Couldn't put it down, great history, and I learned a bunch about Spanish galleons of the period. Once the second part of the book got going, this was firmly a biography of Roger Dooley's life, with the occasional chapter veering into other revelant information, and while some chunks, such as Dooley's adolescent years alongside the early years of Castro's regime in Cuba, were very interesting for how little I knew about the period and region, the in-depth writing on his whole life definitely dragged in places, and unfortunately the lead-up to the discovery of the San Jose wreckage was one of those places. It was a good book, it just didn't seem to hold the momentum throughout. Very much worth reading if you're interested in shipwrecks and undersea archeology!

[Alex Vogel · Rating 5 out of 5]

I’m utterly intrigued by shipwrecks as time capsules in general, and I feel a particular fascination for the Age of Sail’s most opulent ships, such as the Spanish galleons. Even more so because no accurate building plans for these ships exist, and any attempts at reconstruction can only approximate the originals, never reproduce them faithfully.

In that sense, I sympathize with Roger Dooley, the man who developed a glowing, lifelong passion for one of the last glorious galleons, the San José, which sank after a battle off the coast of Colombia (then Viceroyalty of Peru) in 1708. Although the ship carried a treasure of mind-boggling value, he was even more fascinated by the likelihood that the wreck had remained exceptionally well preserved due to the depth at which it found its final resting place.

This documentary covers not only the fateful voyage of the San José, but also the story of the man who rediscovered it and the trials and tribulations he had to endure along the way. Locating this wreck at a depth of 600 meters is not only an immense technical and financial challenge; above all, sadly, it is a political one (Spain appears to be in the stronger position when it comes to the question of cultural heritage. It would also likely be well equipped to recover the wreck and complete the operation in due time. But that's only one of several points of contention.).

Yes, the treasure it holds is unfathomable, but to me the historical information provided by the galleon itself and its artefacts is far more fascinating. It amazes me that the Titanic — discovered at a depth of nearly 4,000 meters in 1985 — has yielded numerous salvaged artefacts, while one of the most historically valuable Age of Sail wrecks ever discovered still remains virtually untouched at 600 meters depth without only a handful of artefact having been recovered so far, largely because of said political and financial disputes.

Like Roger Dooley, I hope the wreck will soon be recovered with proper archaeological care, studied thoroughly, and eventually exhibited. An incredibly well-researched and well-written documentary.

I want to know more about the San José.

[Johannes · Rating 5 out of 5]

This was such an engaging read. Started it in the waiting room at my GP and did not even mind NOR notice the wait time because I was INHALING this book. It's rare that someone gives me the feeling they're obsessed with the subject they're writing about but also self aware enough of that obsession to turn it to the advantage of the research and the story and this book strikes the balance for me.

[AltLovesBooks · Rating 4 out of 5]

"The sea is broad and her paths are many."

I read Sancton's other book, Madhouse at the End of the Earth: The Belgica's Journey into the Dark Antarctic Night, as part of my deep dive into arctic exploration, and was really pleased with the result. I somehow missed(!) that he has another book coming next month (and will absolutely pick it up soon), but did manage to snag the ARC for this upcoming book of his. I went into it basically blind; I didn't know much about either the San Jose or treasure hunting in general, but I ended up walking away with more treasure hunter knowledge, historical and naval knowledge, and information about the players involved than I expected.

This book covers a lot of ground in its journey to the San Jose. The opening few chapters recounting how and why it sunk in the first place set the stage for later on, but also were interesting in their own right. I thought the different accounts for the lead up to and the actual battle of was a nice touch; you get to experience multiple angles of the incident. After this introduction of sorts, we're thrust into the role of Dooley-watcher, where we're introduced to him first later in life and then from childhood on up in Cuba. I sort of thought the Dooley life chapters were a mixed bag; some were really interesting, and sort of shows how and why Dooley made the choices he made later on, and some felt a bit extraneous and made things feel a bit slow. The treasure hunter asides were universally interesting to me, as was the actual search for the San Jose later on. Lots of neat footnotes are included here, particularly about the preponderance of shells around the wreck site and the connection between them and bones. Nature is metal.

I will say that I sort of expected a bit more about the wreck itself. It felt like by the time it was located, the book was basically over. With what happens later, I guess that's to be expected, but it felt a bit anticlimactic given the title of the book. But as a book about treasure hunting vs. deep sea archaeology, I was very pleased.

Thanks to the publisher and NetGalley for a free e-copy of this book in exchange for an honest review.

[Natalie Giglio · Rating 4 out of 5]

4.65/5 - I’m really not sure how I came about this book but it was an entertaining and educational read. Written by a journalist, you follows the life’s journey of Roger Dooley who is a Cuban “maritime archaeologist” whose life mission is to discover and excavate the famous Spanish galleon, the San Jose. The story shows the purest form of determination and passion. The writer spent 5 years interviewing and piecing together this story. What was craziest to me was that a ship that sank off of the Colombian coast in 1708 was being investigated, studied and searched for in the 2010s. I had no idea that governments and researches were working on this project.

[Kevin · Rating 5 out of 5]

Yep. Still like boats.

[Emily O’Flanagan · Rating 5 out of 5]

I thought the ending dragged on a bit but overall a fascinating story

[Josh · Rating 4 out of 5]

Quite enjoyable, a blend of history of the Spanish empire with modern day treasure hunting, all with a keen eye for human interest.

[Karyl · Rating 4 out of 5]

A while back, I read the author’s Madhouse at the End of the Earth: The Belgica's Journey into the Dark Antarctic Night as part of my sad boat obsession, and absolutely loved it. I had gone into my local indie bookstore, and the owner gave me this ARC to read, knowing how much I enjoyed Sancton’s earlier book. I admit it took me entirely too long to read it, but it was quite the ride!!

The book opens with a discussion of the Spanish empire and from where came the precious metals that European colonizers were obsessed with. It’s insane to think of how much literal treasure was on these ships that were bound back to Europe; everyone on the ships would have huge quantities of contraband that was hidden from the Spanish authorities, so it’s difficult to know exactly how much riches were on each journey. But suffice it to say it was A LOT. Hence why there have been so many treasure hunters wanting to find these shipwrecks as a quick way to become insanely wealthy.

We also see the battle that sunk the San Jose from multiple angles. This gives a really clear picture of what exactly had happened, though for hundreds of years it was unclear exactly where.

Enter Roger Dooley, an American raised in Cuba during the Castro years who found refuge under the sparkly waters of the Caribbean. Though initially he comes across as a little suspect, Sancton shows that Dooley was motivated mostly by the hopes of learning new information from these wrecks. For him, the treasure was secondary. He wasn’t in it to make money, unlike many of the other treasure hunters Sancton profiles. It hurts my heart so much to think of the damage these men did to these historical sites by blowing up the coral and the wrecks in hopes of getting their hands on gold and silver. Knowledge meant nothing to them.

It was also interesting to see how Colombia handled the discovery of the San Juan site, and how it changed depending on who was president. Having one president act out of spite regarding his predecessor is somewhat amusing, though sad at the same time.

I really hope people enjoy this book. I wish I had been able to give it more of my attention, but I am so glad to have read it. Sancton is quickly becoming a must-read author for me.

[lonnson · Rating 4 out of 5]

As a huge fan of all things polar exploration, Julian Sancton's Madhouse At The End Of The Earth is one of my favourite nonfiction books I've read to-date, so it was a no-brainer to also pick up his newest release. Sancton's writing style is one of the most engaging and entertaining I've encountered in nonfiction, and where Madhouse is a purely historical account, Neptune's Fortune delves into a tale spanning centuries, from the dramatic battle that sank the treasure galleon San José to Castro's Cuba and the adventure and bitter legal battles of modern-era treasure hunting, but most of all the incredible life and dedication of archaeologist and unflappable dreamer Roger Dooley, whose unlikely and tumultuous life and decades-long search for the San José sounds like straight out of an adventure movie and left me really moved by the end.

[Robert Melnyk · Rating 4 out of 5]

Very interesting book about the search for a Spanish Galleon which sank of the coast of Columbia over 300 years ago, with over a billion dollars worth of gold and silver on board. The book centers around one person's quest to locate the wreck of the San Jose. Roger Dooley was a Cuban American who became obsessed with finding the wreck. The book details his life as a diver and an archeologist, and his quest to locate the famous wreck. The book goes into the history of the ship and how it came to sink, and Dooley's efforts to locate it over 300 years later. I enjoyed this book because I enjoy history, and although I have not done so in quite a long time, I used to be an avid SCUBA diver, and have dove on may wrecks in the past. While this wreck lies in water far too deep to dive on, they used submersible subs to assist in locating the wreck. The book also goes into some detail of all the legal battles involved in who should have ownership of the wreck and its treasure.

[James Phelps · Rating 4 out of 5]

Interesting story full of adventure and intrigue. Disappointing ending,not on part of the author but just the malaise of events and frustration experienced by the reader at the lack of a satisfactory outcome.

[Wessel · Rating 4 out of 5]

Leuk en spannend boek. Hoewel de titel beter kan worden omgevormd naar Dolly's leven en zijn zoektocht naar het Spaanse fregat de "San José". Nogsteeds echt een leuk en interessant boek.

4 sterren

[Karen Jenkins · Rating 4 out of 5]

Fascinating story about Roger Dooley's quest to find and study one of the most sought after Spanish shipwrecks of all time, the San Jose. It carried, in terms of today's money, billions of dollars worth of gold and silver. But, as they say in the book, "The bigger the treasure, the bigger the troubles."

[Dallin Kohler · Rating 4 out of 5]

Solid 4 stars.

[Nick · Rating 4 out of 5]

This was a fun book, thank you to Netgalley for the ARC in exchange for an honest review.

As a history buff but not all that familiar with this particular wreck, I found the historical piece interesting and enjoyed reading about the process to find the galleon.

I liked the authors style here, it was very readable and made you want to root for Dooley. Pacing overall was pretty good, and while there was a lot of background on Dooley, it felt about right to paint the picture of who he is and what helped drive him to his fascination.

[Chuck Neal · Rating 5 out of 5]

Excellent tales of sunken warships , Spanish galleons, sunken with treasure beyond measure. Fascinating stories of the struggles to find explore and exploit the sunken remains

[DJ · Rating 4 out of 5]

Really enjoyable read for the sea faring folk. Arrrrr why is the rum always gone.

[Michael T. McAlhaney · Rating 4 out of 5]

Book #4 of 2026
By now you probably know I love books about ships, shipwrecks, high seas exploration, buried treasures, etc. and this author’s debut novel, ‘Madhouse at the End of the Earth: The Belgica’s Journey into the Dark Antarctic Night’, is among my favorites!
Julian Sancton’s sophomore effort, while not quite as bone-chilling as his first (see what I did there…), is a superbly researched and fascinating book about one man’s obsession with finding and excavating the legendary Spanish galleon known as the San Jose. The ship sunk off the coast of Colombia over 300 years ago when it was attacked by an English warship whose captain and crew sought to steal approximately $1 Billion worth of gold and silver believed to be aboard the San Jose and en route to the Spanish king.
I thoroughly enjoyed the book and learned quite a bit about European colonialism along the way.

[Aoibhe MacManus · Rating 5 out of 5]

This mans passion, determination, and resilience is honestly inspiring. An interesting story that highlights the power of optimism. Also a great history lesson on the Spanish colonisation of the Americas and an insight into the world of maritime archaeology.

[David Wasley · Rating 4 out of 5]

There are really two stories here, that of Roger Dooley and that of other ship wreck hunters. Combining the two makes for an overly long and loose account. Parts of it make for tedious reading.

[Erica · Rating 2 out of 5]

I did not care for the way this was written. I thought it would be similar to The Wager, but it is very history heavy with backstory before even getting to the shipwreck and the Spanish Empire. It was a bit of a slog to get through.

[Jessica · Rating 3 out of 5]

There was an audible gasp out of me, when I saw this book was coming out. I so dearly loved the first book by this author, and eagerly started this newest story, expecting to get wrapped up in the history, the writing, the journey.

And I did. At first. The history of treasure galleons, of the cities that popped up along the shipping lanes and the people that ruled them, of the sheer amount of money, goods, treasure that floated around the globe, that was lost at the bottom of the ocean…it captivated me.

And then the story shifted. I didn’t hate that the author moved to the history of Roger Dooley - didn’t even really mind when he took us through the history of Cuba, Castro, and diving in Cuba. It was fascinating, and still managed to keep my interest for a while longer, but it was when the story moved into covering The Big Five that my interest waned.

Just…the avarice. The machismo. The disregard of the men who literally blew up history to satisfy their need.

And it’s nothing against the author or the history he shared. But this one just didn’t move me - didn’t draw me in - as easily or quickly as Madhouse. And maybe I was expecting too much, but how could I not?

It was like reliving my playthrougsh of Sid Meier’s Pirates! reading through the first few chapters. It was an adventure, just what I was looking for from the book. And then…it wasn’t.