The Tremendous Event

In Short

When a cataclysmic earthquake suddenly heaves the seabed upward and drains the English Channel, the physical boundary between France and Britain vanishes overnight. Thrust into this uncharted, perilous landscape, young Frenchman Simon Dubosc sets out across the wet, virgin earth to rescue his beloved Isabel Bakefield and her father from the shipwrecked Queen Mary. As chaos consumes both nations, lawless marauders, ruthless opportunists, and desperate survivors clash over sunken treasure and basic survival on the newly formed land mass. Maurice Leblanc's speculative adventure endures as a vivid, fast-paced vision of immediate societal collapse.

The Story

The tale begins with a lighthearted challenge that quickly turns into a desperate struggle for life. Young Simon Dubosc seeks the hand of Isabel Bakefield, but her proud father, Lord Bakefield, dismisses the yeoman’s descendant, setting a virtually impossible standard: Simon must perform legendary feats worthy of William the Conqueror within weeks to prove his worth. Soon after, Isabel flees toward England aboard a vessel carrying a priceless heirloom concealed in her luggage. Before she can safely reach the opposite shore, a colossal geological upheaval rocks the region. The seabed between France and England rises out of the ocean, stranding ships, destroying coastal towns, and completely eliminating the English Channel.

Unaware of the full magnitude of the disaster at first, Simon sets out on foot from the French coast into the dark, foggy expanse of the newly exposed Channel floor. He navigates treacherous ravines, muddy lowlands, and towering ridges of raw earth, driven entirely by his determination to reach Isabel. As he presses forward through the mist, he realizes that the vanished sea has transformed into a lawless frontier. The pioneer spirit of the new territory quickly devolves into violence: desperate survivors, rogue bands, and opportunistic plunderers descend upon the stranded ocean liners and sunken wrecks to claim their gold and cargo.

Along his journey, Simon encounters a strange assortment of companions, including the eccentric geologist Old Sandstone, who revels in proving his scientific theories about the earth's fault lines, and the mysterious half-breed tracker Antonio, known as Lynx-Eye. He also meets Dolores, a fiercely independent woman with a rugged past, who joins their party and repeatedly saves them with her sharp instincts and marksmanship. Together, they track the trail of Edward Rolleston, a courageous yet ruthless Englishman whose gang has seized control of the wrecked ocean liner Queen Mary, where Isabel and Lord Bakefield are trapped.

The voyage across the seabed becomes a grueling battle against environmental perils, starvation, and murderous marauders. Armed gangs battle for control of the sea's hidden riches, culminating in a horrific siege around the Queen Mary. Simon is captured, gagged, and thrown into a suffocating hold alongside dozens of dying men. Antonio secretly infiltrates Rolleston's ranks and frees Simon, allowing them to make a final, desperate stand against the surrounding hordes of pillagers. Just as Simon and Isabel are about to be overwhelmed by the lawless crowd, a French military bugle charge signals the arrival of organized forces, restoring order to the newly forged continental frontier.

How It Unfolds

A daunting challenge Simon Dubosc petitions the aristocratic Lord Bakefield for permission to marry his daughter Isabel. Lord Bakefield mockingly demands that Simon achieve a feat comparable to William the Conqueror within a matter of weeks, a condition Simon boldly accepts before Isabel abruptly embarks on a cross-Channel voyage.

The seabed rises A cataclysmic earthquake upheaves the floor of the English Channel, draining the water and stranding naval traffic. Simon leaves Dieppe on foot, stepping out onto the newly exposed, foggy terrain in a relentless bid to reach the English side and find his beloved.

Into the wilderness Navigating mud, ridges, and hidden ravines in absolute darkness, Simon encounters the first signs of human lawlessness on the virgin soil when he discovers a murder committed over a stash of recovered gold. He joins forces with the geologist Old Sandstone, the tracker Lynx-Eye, and the sharp-shooting Dolores.

Desperate pursuit The small expedition follows the trail of Edward Rolleston, who has gathered a band of heavily armed men to reach the stranded Queen Mary. The journey is marred by wrong turns, exhaustion, lost supplies, and constant ambushes by roving bands of plunderers.

Captured in the wreck Upon reaching the Queen Mary, Simon is captured by Rolleston's men, bound, gagged, and thrown into a sweltering, crowded hold filled with dead and dying captives. Antonio sneaks into the crew under cover, manages to spare Simon's life during a execution detail, and helps him escape.

The final stand Simon finds Isabel and her injured father, but a massive mob of marauders surrounds the wreck to claim its contents and take Isabel captive. Dolores arrives on horseback to bolster their defense, fighting side-by-side with Simon and Antonio until regular military troops arrive to break the siege.

The People

• Simon Dubosc: A courageous, physically resilient young Frenchman of humble yeoman descent. Driven by his deep love for Isabel Bakefield, he willingly marches into an uncharted, deadly environment to rescue her, evolving from a confident suitor into an indomitable survivor and leader.
• Isabel Bakefield: An aristocratic Englishwoman who flees her home to escape an unhappy domestic life, carrying a fortune in pearls hidden inside a rolled-up rug. She finds herself trapped in the middle of a global catastrophe and relies on Simon's devotion to save her.
• Lord Bakefield: Isabel’s proud, traditional father. He initially rejects Simon's proposal due to social class, but his rigid world is shattered by the catastrophe, leaving him battered, vulnerable, and dependent on Simon for survival.
• Antonio (Lynx-Eye): A skilled Indian tracker whose keen eyes and woodcraft allow the party to read footprints and navigate the shifting, featureless mud of the drained Channel floor. He acts out of a deep personal drive for retribution against Rolleston.
• Dolores: A fiery, practical woman who rose from street poverty in Mexico to become a cabaret dancer. She brings lethal marksmanship, cool composure, and sharp instincts to the party, protecting Simon despite the complex emotional tension between them.
• Edward Rolleston: A wealthy, daring Englishman who seizes control of an armed gang during the crisis. Though initially appearing brave, he turns ruthless, using force and machine guns to hoard treasure on the stranded liners.
• Old Sandstone: An eccentric, single-minded geology professor who accurately predicted the fault-line rupture. He remains comically obsessed with collecting rock samples and explaining Pliocene strata even as lawless violence rages around him.

In Its Own Voice

"He recognized the purpose in view of which he had been preparing for years and years: it was to win a woman who was dearer to him than anything on earth and whose conquest would force him to claim that place in the world which his merits deserved."

Simon reflects on his unwavering resolve as he steps out into the dark night to begin his perilous trek across the exposed Channel.

"England is no longer an Island; she forms part of the European continent; she is riveted on to France!"

Old Sandstone enthusiastically explains the geopolitical and geological reality of the massive upheaval to a stunned Simon.

"With their backs against the horse, the little party faced in all directions, firing, wounding, killing."

The small band makes a desperate, final stand against an overwhelming mob of plunderers on the muddy floor of the Channel.

What It's Really About

Beneath its swift adventure narrative, the novel explores how thin the veneer of human civilization becomes when physical structures suddenly fail. By draining the barrier between two historic rivals, the story turns the English Channel into a moral vacuum where law, class, and social decorum vanish instantly. It contrasts Old World aristocratic vanity—represented by Lord Bakefield's insistence on lineage—with the immediate, practical meritocracy demanded by frontier survival. The new continent acts as a mirror for human nature: while scientists see geological wonder and lovers see a path to reunion, opportunistic mobs revert instantly to violence and greed. The book argues that true nobility is found not in ancestral titles, but in selflessness, adaptability, and resilience when society breaks down.

Why Read It Today

The Tremendous Event offers a fascinating, early twentieth-century speculative vision that merges disaster fiction with classical romance. Readers who enjoy survival adventures, post-apocalyptic landscapes, and historical speculative fiction will be swept up by Maurice Leblanc's imaginative premise. Rather than focusing solely on global politics, the novel zeroes in on the immediate, tactile experience of walking across a wet, oceanless seabed littered with fresh shipwrecks, deep mud, and fog.

The narrative moves at a rapid pace, though readers should expect the dramatic, slightly sensationalized tone typical of early 1900s serial adventure stories. The characters make swift, heroic decisions, and the villains are unashamedly brutal. While the melodrama and period tropes are evident—such as romanticized depictions of native trackers and quick violent escalations—the sheer originality of the setting keeps the narrative compelling. It is a thrilling, action-packed read that leaves a lasting visual impression of a world fundamentally remade in a single night.