Product guide

Devil's Gate: NUMA Files #9

Devil's Gate is the ninth NUMA Files adventure, following Kurt Austin and the NUMA team from an Atlantic shipwreck mystery into a plot involving armed pirates, a kidnapped CERN scientist and a weapon with global consequences. This English-language ebook is listed at 514 pages.

At a glance

Ninth novel in the NUMA Files series, starring Kurt Austin and the NUMA team.
The plot begins with an explosion near an underwater graveyard of ships and planes in the Eastern Atlantic.
The story connects pirates, a kidnapped CERN scientist, a lost aircraft and a scheme threatening major nations.

Price

$0.99Save 96%

Reference price: ~~$23.99~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

The action-adventure premise combines a deep-sea mystery with an international conspiracy.
Digital reading features include supported screen-reader access, enhanced typesetting, Word Wise and Page Flip.

Technical specifications

11 specifications

Book details
Publisher	Sphere
Publication date	June 27 2024
Language	English
Print length	514 pages
ISBN-13	978-1408733158

Ebook details
File size	2.7 MB
Screen Reader	Supported
Enhanced typesetting	Enabled
X-Ray	Not Enabled
Word Wise	Enabled
Page Flip	Enabled

What to know before buying

Customer feedback is strongly positive about the action, plot, engaging characters and pacing. The listing presents a fast-moving adventure, but suitability still depends on whether you enjoy high-stakes thriller plots and a continuing series.

Who is it for?

A good fit for

Readers looking for an action-heavy sea adventure with an international thriller plot.
Existing NUMA Files readers following Kurt Austin's adventures.
Ebook readers who may use screen-reader support or Word Wise.

Less suited to

Readers seeking a standalone, low-action story or a different genre.

Customer reviews on Amazon

4.5 / 5 · 6,434 ratings

5 stars60%60%
4 stars31%31%
3 stars8%8%
2 stars1%1%
1 star0%0%

Customer feedback describes a lively, action-led adventure and highlights the story, engaging characters, plot twists and pacing. This aligns with the listing's high-stakes sea-mystery premise, which may suit readers wanting a fast-moving thriller. Aggregate ratings are mostly four- and five-star, with a smaller three-star share, so the overall positive response does not mean every reader had the same experience.

Positive themes

Feedback highlights the action and adventure.
Readers respond positively to the story, engaging characters and plot twists.
Pacing and the book's fit with expectations for a Clive Cussler adventure are also praised.

Frequently asked questions

What is Devil's Gate about?

Kurt Austin and the NUMA team investigate an explosion near an Atlantic underwater graveyard, uncovering a mystery involving pirates, a lost aircraft and a wider threat.

Where does this book sit in the NUMA Files series?

The listing identifies Devil's Gate as the ninth book in the NUMA Files series.

What ebook reading features are listed?

Screen Reader is supported, and enhanced typesetting, Word Wise and Page Flip are enabled. X-Ray is not enabled.

How do customers describe the book?

Supplied feedback highlights thrilling action, engaging characters, plot twists and pacing. The aggregate rating is favourable, but ratings alone do not establish why readers responded as they did.