Best Thriller Books Guardian (2026): 5 Compared

Finding the best thriller books guardian readers search for starts with the title itself: several crime and suspense novels put a guardian, or a Guardian, at the center of the story. This list compares five of them by series position, publication date, page count and publisher, using only what each listing publishes.

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The picks

#	Product	Shelf Score	Buy
1	The Guardian by Ralph	9.7/10	Buy on Amazon
2	The Profiler's Daughter by Wade	9.7/10	Buy on Amazon
3	Three Steps Behind by Pettrey	9.7/10	Buy on Amazon
4	The Guardian by Hatchell	9.6/10	Buy on Amazon
5	GUARDIAN Tanner	9.5/10	Buy on Amazon

1

The Guardian by Ralph

Peter Ralph·9.7/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

A crime thriller about a guardianship racket, Book 3 of 8 in the Josh Kennelly series, for readers of legal and financial crime stories.

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Pros

• Book 3 of 8 in an ongoing crime series
• Published October 29, 2019, with a clear series position
• Legal and financial crime premise stated

Cons

• Mature themes: violence and elder exploitation in the description
• Mid-series start; Books 1 and 2 are not in this list
• No page count stated

2

The Profiler's Daughter by Wade

Sabrina Wade·9.7/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

An FBI mystery thriller, Book 1 of 2, following trainee Alex Monroe into her father's cold case, for series starters.

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Pros

• Book 1 of 2, a series start
• Published January 21, 2026
• FBI procedural premise with a profiler's daughter

Cons

• Mature themes: missing women and murder in the description
• No page count stated
• Book 2 is not in this list

3

Three Steps Behind by Pettrey

Dani Pettrey·9.7/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

A romantic thriller, Book 3 of 3 in the Jeopardy Falls series at 288 pages, for readers of suspense with workplace romance.

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Pros

• 288 pages stated
• Book 3 of 3, a completed series
• Bethany House Publishers, September 2026

Cons

• Workplace romance may not suit every thriller reader
• Late-series start at Book 3 of 3
• Violent danger in the description

4

The Guardian by Hatchell

L.M. Hatchell·9.6/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

An urban fantasy thriller, Book 1 of 4, about a woman named Guardian of an ancient magic, for mythology readers.

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Pros

• Book 1 of 4, a series start
• Urban fantasy with Irish mythology
• Published March 31, 2023

Cons

• Fantasy elements, not a straight crime thriller
• Some intense scenes in the description
• No page count stated

5

GUARDIAN Tanner

Remington Kane·9.5/10 Shelf Score

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The Shelf Score runs from 9.2 to 9.8 and weighs fit for the reader or goal (35 points), contents and edition (25), value (25) and listed reading age or level (10, where the listing gives one), using only what the book listing states. How we pick ›

A thriller novel, book 65 of 66, 2026.

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Pros

• 2026 edition stated
• Book 65 of 66
• Remington Kane stated

Cons

• Thriller, not mystery
• Series 65
• No pages stated

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More picks to compare

• The Lost Guardian by HernandezRomantasy adventure with a deadly puzzle questCheck on Amazon

Compare the picks

Book details as published on each listing, collected 22 October 2026.

How we scored them

The Shelf Score weighs fit for the reader, contents and edition, value, and the listed reading age or level where one is given. None of these five listings states a reading age or grade level, so that criterion scores zero across the list. How we pick explains the weights.

Scores run from 9.2 to 9.8: each book’s point total is placed on that range, so more points always means a higher score. Reading age or level counts on a list where at least one listing gives one, and a book whose listing gives none then scores zero on it. Where no listing gives one, the score is taken over the other 85 points. Books carry no warranty, so warranty is not scored.

How to choose the best thriller books guardian

Start with the series position

Two of these are series starters (Book 1 of 2, Book 1 of 4), two sit mid-series (Book 3 of 3, Book 3 of 8), and one is Book 65. Start with Book 1 when the listing gives you the choice. For more ongoing stories, browse thriller book series.

Check the publication date

Dates here run from October 2019 to September 2026. A newer listing is more likely to match the edition you will receive. If you like guardian-titled mysteries beyond thrillers, see mystery novels guardian.

Note the page count

Only one listing states a page count: 288 pages. The rest state none, so expect the format details to be thin on some listings.

Before you buy

• Check the series number on the listing; two of these are Book 3 of longer series.
• Confirm the format: some listings here are Kindle editions with no print length stated.
• Read the description for mature themes; several mention violence.

Frequently Asked Questions

Which book should I start with?

The Profiler’s Daughter is Book 1 of 2 and The Guardian by L.M. Hatchell is Book 1 of 4, so both are series starts. The other three sit mid-series or deep in a long run.

Are these books appropriate for teens?

No listing here states a reading age or grade level. The descriptions mention violence and other mature themes, so check before buying for a teen.

How long are these books?

Only Three Steps Behind states a page count: 288 pages. The rest state none.

Still deciding? Our top pickThe Guardian by Ralph

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Related lists

See every thriller and mystery list and all fiction lists.

More lists: psychological thrillers, thrillers with twist endings, mystery books guardian and horror books guardian.