I'm looking for the name of a book / short story that I read in the early 80's. It was a science fiction / horror story about a scientifically created red slime that is accidentally introduced into the water supply. The slime destroys everything it touches. I don't remember much else other than I believe a male protagonist finds a way to destroy the slime. I read it when I was ~ 10 years old so it was relatively easy reading. Very similar to the blob but the slime was more subtle as it invaded the water supply. Any ideas?

The book was in English. I read it in the US.

  • Where did you read this and in what language? Commented Jul 30, 2017 at 16:35
  • John - thank you for the reply. I'll check out The Clone - it sounds very close, although I don't know why I recalled the slime being red. Thanks again!
    – Brett
    Commented Jul 30, 2017 at 21:25
  • You might have intended to post that comment under John Rennie's answer. If it turns out to be this story, please don't forget to come and upvote and accept his answer ;) Commented Jul 30, 2017 at 21:26

1 Answer 1


This sounds very like The Clone by Theodore L. Thomas and Kate Wilhelm, but in that book I don't think the slime was red and it was published in 1965 so that's 15-20 years earlier than your timescale.

I last read the book in the 70s, and it's so obscure that Googling hasn't found much to jog my memories. However the slime did start in the sewers/water supply but I think it was accidental - an unhappy mingling of chemicals that started it off. Goodreads has the following excerpt:

The clone pulsed up beyond the sink drain, and it was then that Maude Wendall saw it. She frowned with annoyance at the sink stoppage, and prodded at it with her pot scraper. It resisted. She tried to push the mass back down the drain, but it would not go. Clicking her tongue in exasperation, she dropped the pot scraper and prodded the mass with her finger.

Through the permeable cell wall of the clone's tissue flowed the enzyme-laden ichor. On contact with human tissue, the enzymes immediately broke down its proteinaceous structure and utilized the amino acids and other residues to construct new clone tissue. There was no pain in the finger. It was several seconds before the woman realized that her finger had disappeared, had been replaced by the clone's tissue. She screamed then, and lunged back from the sink.

The slime invades human flesh as soon as it touches you. Even the tiniest touch was enough, and it converts human flesh into its own material so it grows by absorbing humans. I mention this in case it jogs your memory - the slime contains less water than human flesh so as it absorbs people the excess water is shed as a spray of water.

I cannot for the life of me remember how it ends, but I think it ends with the clone just running out of energy and dying rather than by any human action.

Something worth mentioning in case you've mixed up two books over the years: there is a short story by John Wyndham called The Red Stuff about a red slime found on an asteroid in the Solar System. This is accidentally released on the Moon where it threatens to overcome the whole Moon. However this slime doesn't directly harm people. It kills only because it swamps people so the suffocate.

  • John - thank you for the reply. I'll check out The Clone - it sounds very close, although I don't know why I recalled the slime being red. Thanks again!
    – Brett
    Commented Jul 30, 2017 at 21:30
  • There were two similar novels in those years (the other is The Presence by Roger Lovin). In The Clone, a scientist discovers that iodine is lethal to the clone and a containment belt is established around Chicago. After a while, in its search for food the clone attacks first the inanimated matter and finally itself.
    – LSerni
    Commented Jul 31, 2017 at 21:12

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