I read a novel as a teenager in the early 2000s about an alien invasion. What I remember is the main characters were teens, the aliens were blobs that entered people's heads, and the teens described seeing them behind their parent's eyes. Those who were taken over didn't have emotions and would communicate with others without talking. I'm pretty sure it was part of a series. Anyone remember this novel?

  • 2
    Certain elements of this resemble The Puppet Masters by Robert A. Heinlein, but there were no teens involved, and it wasn't part of a series.
    – Zeiss Ikon
    Commented Sep 26, 2023 at 14:14
  • Maybe something here: tvtropes.org/pmwiki/pmwiki.php/Main/PuppeteerParasite
    – Shawn
    Commented Sep 26, 2023 at 14:31
  • @ZeissIkon plus the slugs in The Puppet Masters don't enter people's heads, they attach themselves to their backs ;)
    – Andres F.
    Commented Sep 26, 2023 at 14:47
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    I changed the title to be more descriptive, "Alien invasion story" was way too generic
    – Andres F.
    Commented Sep 26, 2023 at 14:54

2 Answers 2


I believe you are referring to the Visitors series by Lynn Harnett and Rodman Philbrick. This is a scifi horror series for youths about teens surviving an alien invasion. These aliens do what you describe - they take over human hosts by entering their heads, and infected humans are described as having something living behind their eyes. The summary for Book 1 at the GoodReads link also mentions the infected talking like robots.

  • Hi, welcome to SF&F. Can you add some details to describe how this is a match for the question?
    – DavidW
    Commented Sep 26, 2023 at 15:41
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    Certainly. Thanks for being patient with a new user.
    – Jbland30
    Commented Sep 26, 2023 at 15:41

It could also be the Animorphs series - there is a covert alien invasion by slug-like parasites called Yeerks. A group of teens inadvertently acquire the ability to shapeshift into whatever animal they touch, and they do battle with these aliens over the course of a whole novel series. The Yeerks communicate with each other via telepathy so there's no need for possessed people to talk to each other, but they are also very cold / emotionless.

  • The Yeerks don't communicate through telepathy, the kids do when they're morphed into animals. Emotionless also isn't quite right, it's more like they don't care about humans because they think of us as lesser species.
    – Izkata
    Commented Sep 27, 2023 at 14:59

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