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Doctor

Written by Murray Leinster

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About this book

"Doctor" by Murray Leinster is a science fiction novel written during the early 1960s. The book presents a captivating narrative that explores the themes of survival and the unknown dangers of space travel, particularly focusing on a devastating virus known as chlorophage, which threatens humanity. Set against the backdrop of a futuristic setting with advanced space travel, the story emphasizes the fragility of human life when faced with the vastness of the cosmos and the microscopic threats that lie within it. The plot centers around Doctor Nordenfeld, the ship's physician aboard the interplanetary liner "Star Queen", as he deals with the potential outbreak of chlorophage after a mysterious little girl, Kathy Brand, boards the ship. Kathy's background reveals a harrowing journey from the devastated planet Kamerun, where the virus wiped out all life. As Nordenfeld investigates, he wrestles with the fear that Kathy may carry the deadly virus to the rest of the ship. Tension mounts as Nordenfeld must make difficult decisions about the safety of passengers and crew, culminating in a climax where he discovers a possible solution to the crisis: a symbiotic microorganism from alien botany that can combat the chlorophage threat. In a race against time, he strives to contain the outbreak while protecting those aboard the "Star Queen", exploring the complexities of sacrifice, duty, and the intricacies of life amid chaos and uncertainty.

Reading guide

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

  • about 7 hours
  • intermediate
  • tense
  • suspenseful
  • thought-provoking

Murray Leinster's "Doctor" is an early 1960s science fiction novel set aboard the interplanetary liner "Star Queen," where humanity faces the existential threat of a devastating virus named chlorophage. The narrative follows Doctor Nordenfeld, the ship's physician, as he grapples with a potential outbreak after a mysterious young girl, Kathy Brand, boards the ship, having survived the virus's eradication of life on her home planet, Kamerun. Nordenfeld must race against time, battling fear and ethical dilemmas, to contain the microscopic menace and protect the passengers and crew. His desperate investigation leads to the discovery of a symbiotic alien microorganism, offering a fragile hope for humanity's survival against the vast and indifferent cosmos.

"The vastness of space offered no immunity, only new vectors for the unseen." (Narrator)

Key themes

Survival Against the Unknown
This is the central theme, exploring humanity's struggle against threats that are incomprehensible, microscopic, and originating from the vastness of space. It emphasizes the fragility of life even with advanced technology and the constant battle for existence.
Scientific Responsibility and Ethics
The theme examines the heavy burden placed on scientists and medical professionals when facing catastrophic threats. It delves into the ethical dilemmas of making decisions that could affect millions, balancing individual rights against the collective good, and the moral courage required for scientific pursuit.
Fragility of Life
This theme underscores how easily life, even technologically advanced human life, can be extinguished by seemingly insignificant forces. It serves as a reminder of humanity's delicate existence within a vast, often hostile, cosmos.

Worth discussing

How does the setting of a confined spaceship amplify the themes of survival and fear in the novel?

Chapter-by-chapter breakdowns, character arcs and the full thematic analysis come with a free account.

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