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The Big Dark Sky by Dean Koontz, 393-page novel

The Big Dark Sky is a science fiction and supernatural thriller by Dean Koontz, following Joanna Chase as disturbing messages draw her back to a Montana ranch where strangers face a threat to humanity. Its premise combines suspense, a gathering ensemble, and a dangerous mystery.

At a glance

  • Joanna Chase returns to her childhood home in Montana after receiving unsettling pleas through calls, television, and dreams.
  • A group of strangers gathers at the remote ranch, each drawn by the same looming danger.
  • Publisher synopsis frames the story as a suspenseful, twist-filled threat to humanity.
Price
$8.18Save 52%

Reference price: $16.99

Price checked: Nov 12, 2026

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Often bought together

Pros and cons

Pros

  • The premise links a central character's forgotten past with an ensemble of strangers and a larger danger.
  • The 393-page length gives readers a substantial standalone novel.

Technical specifications

8 specifications
Publication
PublisherThomas & Mercer
Publication dateJanuary 24, 2023
LanguageEnglish
Print length393 pages
ISBN-101542019915
ISBN-13978-1542019910
Dimensions and installation
Weight listed2.31 pounds
Dimensions6 x 1 x 9 inches

Who is it for?

A good fit for

  • Dean Koontz readers looking for a science fiction and supernatural thriller.
  • Readers drawn to remote-ranch settings, ominous messages, and an ensemble confronting a shared threat.

Less suited to

  • Readers who prefer a straightforward, low-stakes story without science-fiction or supernatural elements.

Customer reviews on Amazon

4.3 / 5 · 31,591 ratings
  • 5 stars56%56%
  • 4 stars28%28%
  • 3 stars11%11%
  • 2 stars3%3%
  • 1 star2%2%

Customer feedback describes the story as engaging and suspenseful, with readers appreciating its characters and writing style. Some enjoy the fast-moving plot, while others say the pace feels rushed in the second third. That pacing split may matter to readers who prefer a steadier build, while the positive response to the story's pull suits those seeking an absorbing thriller.

Positive themes

  • Customers describe the story as engaging and suspenseful.
  • Readers appreciate the character development and writing style.

Mixed feedback

  • Pacing opinions are mixed. Some enjoy the fast pace, while some find the second third rushed.

Frequently asked questions

What is The Big Dark Sky about?

Joanna Chase is drawn back to a Montana ranch by disturbing messages. There she joins strangers who are also drawn toward a dangerous threat.

Who wrote The Big Dark Sky?

The listing identifies Dean Koontz as the author.

How long is the book?

The listing gives a print length of 393 pages.

What language is this edition?

The listed language is English.

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