Calder Venn’s debut, All the Tide Takes: The Lost Treasure of Olivier Levasseur, plunges readers into the high-stakes world of 18th-century piracy, treasure hunting, and the unforgiving Indian Ocean. Published on February 24, 2026, this historical fiction novel is a meticulously researched maritime adventure that blends the intellectual discipline of Patrick O’Brian’s Aubrey-Maturin series with the moral complexity of The Count of Monte Cristo. It’s a tale of ambition, consequence, and the sea’s relentless duality—what it offers and what it takes. With its roots in real history and its sights set on timeless themes, this novel is a standout addition to the genre and the first in a planned trilogy.
Plot and Characters: A Treasure Hunt with Depth
Set in the 1750s, decades after the execution of the infamous pirate Olivier Levasseur (La Buse), the novel follows two unlikely partners: Jean Roux, a royal surveyor and obsessive intellectual, and Captain Sorel, a ruthless rogue with a taste for risk. Together, they set out on a risky quest to decode La Buse’s cryptogram and claim his legendary treasure. Their partnership is riddled with tension, as Roux’s meticulous, cerebral approach clashes with Sorel’s raw, instinctual pragmatism.
Venn’s inspiration for these characters stems from his desire to break away from the English-coded, Caribbean-centric pirate genre. “La Buse was a French pirate, and he chiefly operated in the Indian Ocean, so this needed to be a different kind of pirate novel,” Venn explains. To achieve this, he drew heavily from the structure and flavor of classic French adventure novels like The Count of Monte Cristo and Les Misérables. In particular, the dynamic between Roux and Sorel echoes the moral tension between Valjean and Javert in Les Mis: “In Les Mis, Valjean and Javert are taking opposite sides of a moral question: does conscience or legalism prevail?”
However, Venn’s take on piracy is far more morally ambiguous. “I do not believe there are any heroes in piracy. There are only differing justifications,” he states. This philosophy is shown in the characters’ flaws and motivations. Roux, while a decent man, is not a good one. His obsession with solving the cipher and his intellectual arrogance gradually turn him into a ruthless man. Sorel, on the other hand, is already further down the path of corruption, his menace more overt. Yet Venn suggests that their savagery is not unique: “I think all men have this savagery inside them, and massive treasure is a force that can strip away the mask.”
The treasure hunt unfolds across the wide and volatile Indian Ocean, with the cryptogram’s clues leading to real, historically accurate locations. Venn’s commitment to authenticity shines here; every island, tide, and navigational challenge is grounded in historical fact. The ships themselves—like the pivotal L’Eclipse—are given distinct personalities, echoing the O’Brien-esque tradition of vessels as characters in their own right. The L’Eclipse, in particular, serves as a symbolic and literal centerpiece of the story, representing the passing nature of opportunity and the fragile balance between carefulness and chaos. As Venn notes, “Eclipses were used in historical navigation for timekeeping,” tying the ship’s name to the novel’s themes of calculation and consequence.
The novel’s pacing is deliberate but never slow, balancing the intellectual thrill of solving the cryptogram with the visceral dangers of life at sea. Expect shipboard life, weather as an antagonist, shifting alliances, and the cipher’s clues unfolding through real geography rather than magic. Venn’s decision to avoid supernatural elements or romanticized swashbuckling gives the story a grounded, almost gritty realism. The stakes feel immediate and personal, as the characters’ flaws and ambitions drive the narrative as much as the treasure itself.
Themes: Ambition, Consequence, and the Sea
At its core, All the Tide Takes is a meditation on the costs of pursuit. The title represents the novel’s central theme: the sea, like ambition, is both generous and merciless. As Venn explains, “That’s what the tide takes. It takes everything.” Roux’s obsession with solving the cipher blinds him to the moral and human costs of his quest, implicating not just himself but the reader, who can’t help but root for him despite the mounting consequences.
The novel also explores the lawless fringes of empire, where colonial greed and deception thrive. The Indian Ocean setting, far from the familiar Caribbean, adds a fresh dimension to the pirate genre. Venn’s decision to root the story in this region was driven by historical accuracy: “The Mascarene Islands are actually a little bit dull… so I composed the plot by drawing a real navigational chart on a real map of the region, and worked out how to force my characters to crash into as much chaos as possible.”
The partnership between Roux and Sorel is another thematic cornerstone. Their dynamic is not just a clash of personalities but a study in the duality of human nature. Roux represents intellect, discipline, and the search for knowledge, while Sorel embodies instinct, appetite, and the raw drive for survival. Yet both are deeply flawed, and their partnership reveals how ambition might corrupt even the most calculated plans. Venn draws a parallel to Les Misérables, noting that while Valjean and Javert represent opposing moral philosophies, Roux and Sorel are united by their shared willingness to sacrifice everything for the treasure. “I do not believe there are any heroes in piracy,” Venn states. “There are only differing justifications.”
Historical and Factual Foundation
One of the novel’s greatest strengths is its historical grounding. Venn’s fascination with maps and navigation is evident in the meticulous detail he brings to the story. The legend of La Buse’s cryptogram, a real historical mystery, serves as the perfect hook. Venn’s research even uncovered recent discoveries related to the shipwreck of N.S. do Cabo, adding a timely and tantalizing layer of plausibility to the story. As Venn notes, “This treasure exists, at least I believe it does, and everyone has been looking in the wrong place.”
The novel remains faithful to real maritime history, from navigation techniques such as celestial navigation and dead reckoning to the harsh realities of sail-powered voyages. The Indian Ocean world, with its colonial politics and brutal economics, is vividly rendered, offering a rich backdrop that seems both genuine and immersive. Venn’s decision to avoid excessive nautical jargon ensures that the story remains accessible to modern readers without sacrificing its historical integrity.
Style and Comparisons
Venn’s prose is lean and precise, avoiding the excessive nautical jargon that can bog down maritime fiction. Instead, the focus is on character-based storytelling and the intellectual thrill of the treasure hunt. The novel’s tone and form evoke comparisons to Master and Commander and Treasure Island, but its moral complexity and psychological depth align it more closely with The Count of Monte Cristo and even John Steinbeck’s Cup of Gold. Venn cites Steinbeck as a major influence, particularly in exploring how the pursuit of treasure can strip away humanity.
For film enthusiasts, the novel’s blend of historical realism and treasure-hunting intrigue might recall Master and Commander: The Far Side of the World or the cerebral tension of The Da Vinci Code. The cryptogram at the heart of the story adds a layer of intellectual challenge reminiscent of the unsolved mysteries surrounding the Beale ciphers or Oak Island.
A Promising Start to a Trilogy
All the Tide Takes makes a strong argument for a new kind of pirate novel—one rooted in rigorous historical context and intellectual and moral sophistication. As the first in a planned trilogy, it challenges genre conventions by focusing on flawed characters whose ambitions and ethical dilemmas drive the narrative. With future volumes promising to expand these themes, the novel is essential reading for those seeking a thought-provoking, atmospheric maritime adventure.
Recommended for fans of O’Brien, Treasure Island, and historical mysteries. Whether sailor or armchair explorer, Venn’s story sweeps readers into a world shaped by ambition and the shifting tide.
I do not believe there are any heroes in piracy. There are only differing justifications.
–Calder Venn
Author Spotlight:
Calder Venn and the Treasure of Storytelling
ALL THE TIDE TAKES: THE LOST TREASURE OF OLIVIER LEVASSEUR
by Calder Venn
In 1730, the pirate Olivier Levasseur went to the gallows, leaving behind a cipher that points to immense fortune.
The treasure was never found.
Decades later, two men embark on a voyage to finish what history left unresolved. Set at the edges of empire and grounded in real maritime history, All the Tide Takes follows a narrowing pursuit across the Indian Ocean, where navigation, discipline, and ambition collide with time, weather, and human appetite. As the search tightens, calculation gives way to consequence, and the margin for error disappears.
What the tide offers is inseparable from what it takes.
/Historical Fiction
Available in Kindle and Paperback
Justine Castellon is a brand strategist with an innate ability to weave compelling narratives. She seamlessly blends her professional insight with her passion for literature. Her literary works include romantic drama novels—Four Seasons, The Last Snowfall, Gnight Sara / ‘Night Heck, and I Love You, Sunday Sunset. With her ability to tell stories that linger long after the last word, Justine leaves a mark not only in the world of branding but also in the hearts of her readers.
www.justcastellon.com
2 thoughts on “All the Tide Takes: The Lost Treasure of Olivier Levasseur, Calder Venn’s Fresh Take on Pirate Lore”