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Infinite Intruder

Written by Alan Edward Nourse

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Science Fiction

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About this book

"Infinite Intruder" by Alan Edward Nourse is a science fiction novel written in the early 1950s. The narrative unfolds in a post-apocalyptic future where Roger Strang discovers that someone is attempting to murder his son, David, prompting an urgent investigation. The story delves into themes of identity, memory, and the consequences of time travel as Roger's search leads him to question the very fabric of his existence. The plot centers around Roger Strang's frantic efforts to protect his son from mysterious attackers after multiple attempts on David's life. As Roger grapples with the horrific possibility that his son is being targeted for something greater, he uncovers a shocking truth about his own identity: his past is a construct, created to mask a reality involving time travel and a traumatic history that he cannot recall. With the help of his wife, Ann, he learns that they were once involved in a plot to eliminate their own son, who has grown into a powerful dictator in the future. The tension escalates as Roger ultimately takes drastic action to prevent a war driven by his altered reality, leading to a dramatic climax where he must confront the truth about himself and the dangerous implications of their actions in the past.

Reading guide

Themes, characters and key ideas in Infinite Intruder, written by Chaptra AI.

  • about 8 hours
  • intermediate
  • mysterious
  • tense
  • psychological

Alan Edward Nourse's "Infinite Intruder" is a classic 1950s science fiction novel set in a post-apocalyptic future where Roger Strang's peaceful existence is shattered by mysterious attempts on his son David's life. As Roger frantically investigates, he uncovers a shocking truth: his own memories are a fabrication, designed to conceal a past involving time travel and a traumatic event. He learns that he and his wife, Ann, were part of a plot to prevent their son, who becomes a powerful future dictator, from unleashing war. The narrative culminates in Roger confronting his altered reality and taking drastic action to avert a catastrophic future, forcing him to grapple with the profound implications of identity, memory, and the ethical dilemmas of altering time.

“"My son is being hunted, and I don't even know why. What kind of world is this where a man can't protect his own child?"”

Key themes

Identity and Memory
This theme is central to Roger's journey. His discovery that his entire past is a fabrication forces him to question who he truly is. The novel explores how much of our identity is tied to our memories and whether a person can retain their core self when those memories are proven false. It delves into the trauma and disorientation of a lost or manipulated past.
Time Travel and Paradox
The core science fiction mechanism of the novel, time travel, is used to explore its inherent paradoxes and ethical dilemmas. The story directly grapples with the 'grandfather paradox' (or in this case, the 'son paradox') and the unforeseen consequences of altering the past to change the future. It questions whether it's truly possible to break a predetermined timeline or if all attempts to do so are merely part of the larger, inevitable sequence of events.
Free Will vs. Determinism
This theme runs through the entire narrative, as characters attempt to prevent a prophesied future. Roger and Ann's actions are driven by the belief that David's tyrannical future can be averted, but the persistent attempts on David's life, and Roger's own manipulated past, suggest a strong deterministic force at play. The novel asks whether individuals truly have agency to change their destiny or if all actions are merely predetermined steps in a larger, unavoidable sequence.

Worth discussing

How does Nourse explore the nature of identity when memories can be fabricated or erased?

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