The Passing of Ku Sui

In Short

A pulp space opera of relentless momentum, this novelette follows the steel-nerved adventurer Hawk Carse as he pursues his arch-rival, the sinister Eurasian genius Dr. Ku Sui. Ku Sui has stolen the brains of five eminent scientists, preserving them in liquid tanks to exploit their knowledge. Carse and his companions capture Ku Sui's invisible asteroid, subduing him with a truth-inducing gas to force him to perform complex operations transplanting the brains into new host bodies. Featuring hard-bitten space farers, high-stakes surgical marathons, and atomic ship battles, the story survives as a classic example of early twentieth-century interplanetary fiction.

The Story

The narrative opens with Captain Hawk Carse, a cold-eyed adventurer of legendary speed and steel resolve, joining forces with his trusted companions Ban Wilson, the loyal assistant Friday, and the elderly scientist Eliot Leithgow. Their goal is singular: end the menace of Dr. Ku Sui, a suave, green-eyed mastermind whose grace masks a cold heart. Ku Sui has committed an unspeakable crime by severing the brains of five respected human scientists from their bodies, holding them in a glowing, liquid-filled case to harness their intellects. Carse has promised these trapped, disembodied minds release or new life.

Tracking Ku Sui to a hidden base on a remote Venusian ranch, Carse and his team infiltrate the facility after gun battles with Ku Sui’s robot-coolie guards. Though Ku Sui triggers a explosive trap that destroys the laboratory setup and threatens the brains with imminent death, Carse outmaneuvers the scientist, takes him captive, and commandeers his invisible asteroid base. Time is dangerously short: the disembodied brains can only survive for two hours without full surgical transplantation into physical bodies.

Desperate for host bodies, Carse gathers the only men available: four of Ku Sui's white surgical assistants and a robot-coolie prisoner. To ensure Ku Sui's cooperation, Leithgow administers V-27, an anesthetic gas that strips the villain of his malice, leaving him serene, truthful, and obedient. The team transports the subjects to Leithgow's secret underwater laboratory. There, over nine exhausting days of continuous shifts under harsh operating lights, Ku Sui and the surgeons perform the complex neural operations, successfully fusing the brains into their new host forms.

With the transplants complete and the disembodied minds saved, Carse places Ku Sui back in confinement and sets a course for Earth aboard the spaceship Sandra to present the villain and the living evidence to the World Court of Justice. However, an ally of Ku Sui—the vengeful Venusian Lar Tantril—intercepts the Sandra using the invisible asteroid. Tantril locks the Sandra in a tractor beam, threatening to incinerate the ship.

Carse outsmarts Tantril by overloading his ship's defensive web, causing the tractor beam to snap backward and send the massive asteroid plunging out of control into Earth’s gravity well. Realizing Ku Sui is still trapped inside the plummeting rock, Carse leaps into space in his atmospheric suit, daringly timing his leap to pass through a tear in the asteroid's spinning outer dome. He searches the burning complex to retrieve his enemy, but the Eurasian scientist perishes in the core of his falling fortress. The asteroid strikes the North Atlantic Ocean as a roaring meteor, creating a cloud of billowing steam. Floating safely in upper orbit, Carse watches the fiery end of his greatest foe before being retrieved by the Sandra.

How It Unfolds

The raid on the jungle ranch Carse glides through the dense jungle of Venus beneath the crowns of giant trees to locate Ku Sui's hidden base. After brief, deadly firefights with guard-box coolies, Carse and his men take control of the central building and locate the floating brains.

Trapping the Eurasian mastermind Ku Sui surfaces in the laboratory, only to find Carse waiting for him with a drawn raygun. Though Ku Sui triggers a switch marked with the Chinese character for "Death" that shatters the brain case, Carse captures him alive along with his hidden asteroid.

The race against time Realizing the disembodied brains will perish within hours, Carse gathers five captive host bodies to receive the transplants. Leithgow uses the calming gas V-27 to turn the sinister Ku Sui into a docile, highly cooperative lead surgeon.

The nine-day surgical marathon Sealed inside an underground laboratory beneath intense glare and the smell of antiseptics, the team works in rotating four-hour shifts. Under Ku Sui's immaculate direction, all five brains are successfully grafted into physical bodies.

Ambush in Earth's shadow As the Sandra approaches Earth to deliver Ku Sui to justice, the Venusian commander Lar Tantril ambushes them using the invisible asteroid's tractor beam. Carse overloads his ship's defensive shield, snapping the beam and sending the asteroid tumbling into Earth's atmosphere.

The meteor's plunge Carse dives through space into the spinning dome of the falling asteroid to find Ku Sui, but escapes just before the structure incinerates. The base strikes the Atlantic Ocean like a massive meteor, bringing a dramatic close to the long feud.

The People

• Hawk Carse: A slender, flaxen-haired adventurer with cold gray eyes and lightning-fast draw speed. Driven by a strict personal code, he seeks to honor his vow to save the captive brains and bring Ku Sui to justice, ultimately mourning the spectacular death of his greatest enemy.
• Dr. Ku Sui: A tall, suave Eurasian scientist with emerald green eyes and an unhurried, polite demeanor that conceals a tiger's soul. He seeks solar-system dominance through dark scientific experiments, but under the influence of V-27 gas, he temporarily becomes an innocent, helpful collaborator.
• Eliot Leithgow: An elderly, frail Master Scientist and close friend to Carse. He provides the technical genius, chemical agent V-27, and underwater laboratory required to save the five brains, though the emotional weight of the ordeal wears heavily on his health.
• Ban Wilson: Carse's stalwart companion who provides firepower and muscle during ship operations and raids, maintaining a watchful eye over their captive enemy throughout the flight.
• Friday: Carse's loyal, dark-skinned associate who assists in suit recovery, guards dangerous laboratory exits, and helps pilot the ship during high-speed orbital maneuvers.

In Its Own Voice

"Alive--and with stray memories, which Ku Sui could not banish entirely, of Earth, of love, of the work and the respect that had once been theirs."

— The tragic state of the five eminent scientists preserved as bare brains in a liquid tank.

"It was as if he had slipped into a magic pool whose waters had washed him clean and given him innocence and eyes of peace...."

— The dramatic transformation of Dr. Ku Sui after inhaling the personality-altering gas V-27.

"A cataclysmic burial. A titanic meteor, an incandescent, screaming streak in the night--a cloud of billowing steam--a wall of water rearing back from the strange grave of the asteroid..."

— The final plunge of Ku Sui's asteroid as it strikes the North Atlantic Ocean.

What It's Really About

Beneath its pulp trappings of rayguns and space-suits, the narrative explores the boundaries of human identity and the ethics of scientific power. Ku Sui represents intellect detached from moral empathy, reducing living human beings to raw components or robotic tools. The preserved brains embody the terror of pure consciousness divorced from sensory experience, raising questions about what truly constitutes a person. Carse’s insistence on keeping his word to these disembodied minds emphasizes honor and bodily integrity in a cold, mechanized universe. The story highlights how unchecked ambition destroys its creator, while loyalty and moral restraint preserve human dignity even in the farthest reaches of space.

Why Read It Today

Readers drawn to classic space opera and vintage science fiction will find this novelette a fast-paced, highly atmospheric thrill ride. It offers a vivid glimpse into the 1930s vision of the cosmos, complete with jungle-covered Venusian landscapes, hidden asteroids, and elaborate mechanical gadgets. The prose moves with crisp narrative momentum, balancing tense gunplay with strange, grotesque concepts like disembodied brains and personality-altering gases.

Modern readers should be prepared for period conventions typical of early magazine pulp, including melodramatic characterizations, heightened villainy, and dated portrayals of racial groups and servile characters common to 1930s popular literature. The dialogue carries a distinctly theatrical flourish, and the science relies more on imaginative melodrama than technical accuracy. Yet, the story's earnest energy, dramatic set pieces, and the compelling dynamic between the iron-willed Hawk Carse and the enigmatic Dr. Ku Sui make it an entertaining piece of early speculative fiction that stays with you long after the asteroid makes its final descent.