I read this in late '90s and thought the premise was fascinatingly haunting: A very ancient alien race created either a single or many "berzerker" (?) machines during a war with another race. The machines were programmed so that, IIRC, they would continue to go around smashing any planet found to have sentient life.

The war has been long over with both races destroyed but the machines remain on their mission of unstoppable destruction and are the scourge of the galaxy. The story is told from the view of one man who is attempting to stop one of these machines from reaching its next unintended destination, Earth. I don't recall whether he succeeded. The story ended with him in some kind of orbit in an asteroid belt or debris field and going mad, partially or completely, at the enormity of the scene through his viewport. I'm pretty sure the orbit was around a black hole.

I've tried a number of times over the years to find the title of the book. The "berzerker" machine(s) may be just a name that occurred to me and not what they were called in the novel.

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    Well, there is Saberhagen's "Berserker" universe ... but I haven't the energy to do more than give you that link. I think a few of the stories have the POV you're looking for. Commented Mar 13, 2017 at 5:17
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    Hello Tom, and welcome to Science Fiction & Fantasy. Have you taken the tour yet? If the answer given below is indeed what you are looking for, you can accept the answer by checking the check mark next to it. This will reward the answerer and will let the other users know that your question has been answered. If it doesn't answer your question, don't be afraid to leave a comment telling why it doesn't. You can also edit your question if you remember additional details.
    – SQB
    Commented Mar 13, 2017 at 6:56
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    The title reminded me of the Inhibitors from Alastair Reynolds' Revelation Space universe, until I fully read the question. en.wikipedia.org/wiki/… Commented Mar 13, 2017 at 11:19
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    Made me think of the Starfishers trilogy by Glen Cook where some artificial creatures created for terraforming purposes continue terraforming everything billions of years after the death of the species who created them. To the point where they killed nearly all life in the galaxy the story takes place. Thrice, in a few billion years.
    – Autar
    Commented Mar 13, 2017 at 15:13
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    This sounds exactly like the premise of the video game Halo (modulo a few details--for instance, the machines don't "smash" planets, although, if I recall correctly, it's not entirely clear exactly how they do work). Commented Mar 13, 2017 at 16:24

3 Answers 3


Others (dmckee and can-ned food) have already pointed out that the story you're looking for is from Fred Saberhagen's Berserker series. There are many stories in this series. I believe you're asking about the ones where Johann Karlsen purposely gets himself and a pursuing berserker trapped in an orbit around a black hole. Karlsen is featured in the four stories described below.

1. "Stone Place": novelette, first published in If, March 1965, available at the Internet Archive. ISFDB synopsis:

The various human societies inside and outside the Solar System form an uneasy alliance to launch a massed attack on the mechanized Berserker fleet which is dedicated to destroying all life.

This story introduces the character Johann Karlsen, leader of the fleet of the human alliance in a great battle against the berserkers:

Throughout the long war, the berserker computers had gathered and collated all available data on the men who became leaders of Life. Now against this data they matched, point for point, every detail that could be learned about Johann Karlsen.

The behavior of these leading units often resisted analysis, as if some quality of the life-disease in them was forever beyond the reach of machines. These individuals used logic, but sometimes it seemed they were not bound by logic. The most dangerous life-units of all sometimes acted in ways that seemed to contradict the known supremacy of the laws of physics and chance, as if they could be minds possessed of true free will, instead of its illusion.

And Karlsen was one of these, supremely one of these. His fitting of the dangerous pattern became plainer with every new comparison.

2. "Masque of the Red Shift": novelette, first published in If, November 1965, available at the Internet Archive. ISFDB synopsis:

A robotic representative of a giant artificially intelligent war machine programmed to destroy all life infiltrates the decadent court of the human rulers.

The black hole, or "hypermass" as it's called, is introduced at the beginning of this story:

Nogara had not come here to look at galaxies, however; he had come to look at something new, at a phenomenon never before seen by men at such close range.

It was made visible to him by the apparent pinching-together of the galaxies beyond it, and by the clouds and streamers of dust cascading into it. The star that formed the center of the phenomenon was itself held beyond human sight by the strength of its own gravity. Its mass, perhaps a billion times that of Sol, so bent spacetime around itself that not a photon of light could escape it with a visible wavelength.

The dusty debris of deep space tumbled and churned, falling into the grip of the hypermass. The falling dust built up static charges until lightning turned it into luminescent thunderclouds, and the flicker of the vast lightning shifted into the red before it vanished, near the bottom of the gravitational hill. Probably not even a neutrino could escape this sun. And no ship would dare approach much closer than Nirvana now rode.

It ends with Karlsen and the pursuing berserker flying into the hypermass:

The launch was now going certainly into the hypermass, gripped by a gravity that could make any engines useless. And the berserker-ship was going headlong after the launch, caring for nothing but to make sure of Karlsen.

The two specks tinted red, and redder still, racing before an enormous falling cloud of dust as if flying into a planet's sunset sky. And then the red shift of the hypermass took them into invisibility, the the universe saw them no more.

3. "In the Temple of Mars": novelette, first published in If, April 1966, available at the Internet Archive. ISFDB synopsis:

A gladiator becomes a pawn in the schemes of a death cult which worships Berserker machines.

Karlsen is offstage in this story, but a plan for rescuing him is discussed:

"Yes, I think there is a chance." Hemphill's face had become iron again. "You saw what efforts the berserkers made to kill him. They feared him, in their iron guts, as they feared no one else. Though I never quite understood why . . . so, if we can save him, we must do so without delay. Do you agree?"

"Certainly, but how?"

"With this ship. It has the strongest engines ever built—trust Nogara to have seen to that, with his own safety in mind."

Mitch whistled softly. "Strong enough to match orbits with Karlsen and pull him out of there?"

"Yes, mathematically. Supposedly."

4. "The Face of the Deep": short story, originally published in If, September 1966, available at the Internet Archive. ISFDB synopsis:

A hero in the war against machines which intend to exterminate all life is rescued from orbit around a black hole.

This story opens with Karlsen, in orbit around the hypermass, admiring the view outside his craft:

After five minutes had gone by with no apparent change in his situation, Karlsen realized that he might be going to live for a while yet. And as soon as this happened, as soon as his mind dared open its eyes again, so to speak, he began to see the depths of space around him and what they held.

There followed a short time during which he seemed unable to move; a few minutes passed while he thought he might go mad.

He rode in a crystalline bubble of a launch about twelve feet in diameter. The fortunes of war had dropped him here, halfway down the steepest gravitational hill in the known universe.

At the unspeakable bottom of this hill lay a sun so massive that not a quantum of light could escape it with a visible wavelength. In less than a minute he and his raindrop of a boat had fallen here, some immeasurable distance out of normal space, trying to escape an enemy. Karlsen had spent that falling minute in prayer, achieving something like calm, considering himself already dead.

But after that minute he was suddenly no longer falling. He seemed to have entered an orbit—an orbit that no man had ever traveled before, amid sights no eyes had ever seen.

He rode above a thunderstorm at war with a sunset—a ceaseless, soundless turmoil of fantastic clouds that filled half the sky like a nearby planet. But this cloud-mass was immeasurably bigger than any planet, vaster even than most giant stars. Its core and its cause was a hypermassive sun a billion times the weight of Sol.

[. . . .]

His orbit, he guessed, must be roughly the size of Earth’s path around Sol. But judging by the way the surface of clouds was turning beneath him, he would complete a full circuit every fifteen minutes or so. This was madness, to outspeed light in normal space — but then of course space was not normal here. It could not be. These insane orbiting threads of dust and rock suggested that here gravity had formed itself into lines of force, like magnetism.

The orbiting threads of debris above Karlsen’s traveled less rapidly than his. In the nearer threads below him, he could distinguish individual rocks, passing him up like the teeth of a buzzsaw. His mind recoiled from those teeth, from the sheer grandeur of speed and distance and size.

I think you must have read more than one of these stories; you certainly must have read "The Face of the Deep", because that's the only one that depicts Karlsen in orbit around the black hole, admiring the scenery; but I think you must have read one or more of the earlier stories as well. All four of them appeared in the collection Berserkers: The Beginning which was published in 1998, agreeing with your "late 90s." Alternatively, you could have read them in in the earlier collection Berserker, perhaps in one of the Ace Books editions.

  • @TomRussell This appears to be a more knowledgable answer than mine, so you should consider ACCEPTING this one rather than mine. Commented Mar 13, 2017 at 17:54
  • Indeed. Looks like like the sequel. Cool stuff. Commented Mar 19, 2017 at 5:49
  • @TomRussell I added some more stuff to my answer, in case you're interested.
    – user14111
    Commented Mar 23, 2017 at 6:03
  • Wow. There's a lot going on, here. So, the story I read in late 1996 (sorry, mid '90s) that ended with Karlsen in orbit was part of a volume, rather than a novel. Thanks! Commented Mar 24, 2017 at 3:28
  • @can-ned_food Done Commented Feb 13, 2018 at 8:15

If it was indeed a book, it was most probably

  • The Berserker series is a series of space opera science fiction short stories and novels by Fred Saberhagen, in which robotic self-replicating machines strive to destroy all life.1

Kudos to @dmckee for mentioning that, although that mention had no bearing on my answer. (Tee hee — no hard feelings?)


If it wasn't a book, it could've been this:

An alien probe approaches the station with a series of questions that have to be answered correctly within 24 hours, or Babylon 5 will be destroyed.
The probe does not in fact explode but is part of a Berserker style campaign, designed to wipe out races that are technologically superior to the creators of the probe.1

(It probably wasn't, but I thought it deserved an honorable mention as my first introduction to a similar concept.)

  • The fact that the Wikipedia entry described it as "Berserker style" probably should have been a big clue.
    – T.E.D.
    Commented Mar 13, 2017 at 15:11
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    @T.E.D. Sci-Fi is rife with tips of the hat like that, as you probably know. In that episode, Captain Sheridan actually refers to the probe by that name, as if it were the proper military vernacular. Commented Mar 13, 2017 at 17:55

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