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JC Ryan
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The Delphi Technique: A K9 Thriller Where Terror Strikes and the Chase Turns Lethal (Rex Dalton K9 Thrillers Book 10) Kindle Edition

by JC Ryan (Author), Laurie Vermillion (Editor) Format: Kindle Edition
4.5 out of 5 stars 3,476 ratings

A deadly terror plot, a relentless pursuit and a K9 team caught in the crossfire

Rex Dalton, his wife Catia and their military-trained dog Digger are enjoying the sun-soaked streets of Rhodes, Greece—until chaos erupts before their eyes. A professional assassin guns down two people in broad daylight.

Instinct takes over. Rex and Digger give chase through the city, but when they corner the killer, she makes a shocking choice—taking her own life rather than being captured. What seems like a closed case quickly spirals into something far more dangerous.

That night, as Rex reports the incident to his contact, John Brandt, three masked gunmen storm their hotel room. In a hail of bullets, Rex, Catia and Digger barely escape with their lives. Now, they are pulled into a high-stakes CIA operation to track down a terrorist mastermind—someone whose vision of destruction could plunge Europe into chaos. But stopping the threat means following a deadly trail of deception, where no one can be trusted—failure is not an option.

The Delphi Technique is a gripping, high-intensity K9 thriller from best-selling author JC Ryan, and the pulse-pounding tenth book in the Rex Dalton K9 Thrillers series.

____________________________________________

Praise for the Delphi Technique:

★ ★ ★ ★ ★ This book was so riveting that I couldn't put it down till the end.

★ ★ ★ ★ ★ All the Rex Dalton Thrillers have more plot twists than a sidewinders path in the desert sands, but this one more than most…

★ ★ ★ ★ ★ I love this series, it is a fast pace action filled thrill ride from start to finish.

★ ★ ★ ★ ★ Excellent fast action...

★ ★ ★ ★ ★ Every time Digger participated in any incident, I swear that he must have ESP.

★ ★ ★ ★ ★ I was engrossed!

★ ★ ★ ★ ★ Believable characters with a super dog which plays a supporting role in many situations.

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  1. Book 10 of 15
    Rex Dalton K9 Thrillers
  2. Print length
    413 pages
  3. Language
    English
  4. Publication date
    September 28, 2020
  5. File size
    1.6 MB
  6. Page Flip
    Enabled
  7. Word Wise
    Enabled
  8. Enhanced typesetting
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From the Publisher

A delusional genius bent on restoring an empire must be stopped by Rex and Digger...

Editorial Reviews

Review

What readers are saying about the Rex Dalton Series:

Sheila LS - Top Contributor. Can't Read This Series Fast Enough!! I had no idea these books were so good when I first started or I would not have already downloaded other Kindle Unlimited books... I haven't read any series as exciting as Ty Patterson's Warrior series until now.

You really need to start reading this series from the beginning because what happened to Rex in this first book is what made him the way he is. He is a very determined person and does not stop at anything to take down the bad guys--especially if they are terrorist or if it is a group that is funding terrorist. Even though this is his main mindset, he still wants to protect the innocent that inadvertently get in the way...

Texas - This author belongs on the same shelf as Ludlum and Follette and those other guys! My first read by this author and I couldn't put the book down! Mesmerized by the writing style, the vivid descriptions and the storylines, I read without stopping. Fast paced, action packed and interesting on several facets.

Margaret Bentley - I love reading about Rex Dalton's exploits, but my favorite character has to be Digger, his military-trained super-intelligent dog.

Greg D - Rex Dalton was the deadliest agent the government had at their disposal- a one-man unstoppable force in the war on terrorism in the Middle East. With his famous ability to pick up new languages with ease, he figures he can blend into almost any culture and root out evil. What could go wrong? Well, it turns out, plenty.

E. I. HOOD - I was not a fan of the first Rex Dalton book but plunged ahead with the second hoping JC Ryan would not disappoint. I loved it. Now here I am after reading the third book in this series. I had a hard time putting it down and found myself wondering about it when I was not reading.

40 year pioneer - Each book in this series gets even better. This has a fascinating, even though hard to fathom, plot, worked out in intricate detail. Rex Dalton is a mirror of all of us - overcoming seemingly overwhelming odds to achieve great things.

Kindle Customer - From a master storyteller comes another thrilling ride by Rex Dalton. From the sands of Afghanistan to the culture of India the story moves at a breathless pace. Thoroughly enjoyable and highly recommended.

Kindle Customer - Rex Dalton rocks! Another great read from JC Ryan. I've read all of his books and am never disappointed! All I can say is....MORE!

Product details

  • ASIN ‏ : ‎ B08HCXWLC4
  • Publisher ‏ : ‎ Vinci Books; 1st edition (September 28, 2020)
  • Publication date ‏ : ‎ September 28, 2020
  • Language ‏ : ‎ English
  • File size ‏ : ‎ 1.6 MB
  • Text-to-Speech ‏ : ‎ Enabled
  • Screen Reader ‏ : ‎ Supported
  • Enhanced typesetting ‏ : ‎ Enabled
  • X-Ray ‏ : ‎ Enabled
  • Word Wise ‏ : ‎ Enabled
  • Print length ‏ : ‎ 413 pages
  • Customer Reviews:
    4.5 out of 5 stars 3,476 ratings

About the author

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JC Ryan

JC Ryan

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JC Ryan is a bestselling author renowned for his intricate espionage, archaeological thrillers, and conspiracy mysteries. With over 30 acclaimed novels, including the popular Rex Dalton K9 Thrillers, Rossler Foundation Mysteries, and Carter Devereux Mystery Thrillers, Ryan has captivated readers around the globe.

Drawing from his diverse professional background—as a military officer, lawyer, and IT manager—Ryan creates compelling narratives that skillfully blend historical accuracy with thrilling adventure. He is celebrated as a master storyteller, known for crafting riveting plots, meticulous historical details, and engaging, multidimensional characters. Ryan’s meticulous research lends authenticity and depth to each story, immersing readers in richly constructed worlds filled with intrigue, suspense, and adventure.

Fans of David Baldacci, Lee Child’s Jack Reacher, Tom Clancy’s Jack Ryan, Nelson DeMille’s John Corey, Vince Flynn’s Mitch Rapp, Mark Greaney’s Gray Man, Gregg Hurwitz’s Orphan X, Robert Ludlum’s Jason Bourne, Daniel Silva’s Gabriel Allon, Brad Taylor’s Pike Logan, Brad Thor’s Scot Harvath, James Rollins’ Sigma Force, Steve Berry’s Cotton Malone, and Dan Brown’s Robert Langdon will find JC Ryan’s novels equally compelling and unforgettable.

When not writing, Ryan enjoys spending time with his college sweetheart, whom he married in 1978. They are proud parents of two daughters, have two sons-in-law, and are grandparents to two grandchildren.

Customer reviews

4.5 out of 5 stars
3,476 global ratings

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Customers say

Customers enjoy this thriller for its great storyline with every twist and turn, well-developed characters, and fast-paced action. The book receives positive feedback for its writing quality, with one customer noting its great detail. While customers appreciate the inclusion of history, some find it too technical.

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67 customers mention "Action content"57 positive10 negative

Customers enjoy the action content of the book, praising its great storyline, intrigue, and plausible plots with every twist.

"An excellent continuation of the Red Dalton series.... A bit less action propelled and deeper into the political spectrum than some of his books but..." Read more

"...of them contain what seem to be very well researched geography, plausible plots, and extensive character development...." Read more

"This was another intense and suspenseful story with many unexpected and surprising twists that will capture you until the very end...." Read more

"...As I read this book I was again awed of his ability to engross me so completely so as to lose track of time, commitments and responsibilities...." Read more

38 customers mention "Enjoyment"38 positive0 negative

Customers find the book thoroughly enjoyable and entertaining, particularly praising Digger as a character.

"...Thank you for a very fun entertaining read." Read more

"...into the political spectrum than some of his books but still thoroughly enjoyable!" Read more

"This is an outstanding book that I didn't want to put down for anything, even to go to sleep . I am looking forward to your next book in this series." Read more

"...The same exposition over and over, but it worked great. I wouldn’t have caught it if I wasn’t a very experienced beta reader...." Read more

24 customers mention "Character development"21 positive3 negative

Customers enjoy the characters in the book, finding them interesting and colorful, with one customer noting the diverse cast.

"...be very well researched geography, plausible plots, and extensive character development...." Read more

"...Enjoyed previous books that relied upon the story and characters to cary the plot." Read more

"Good book with excellent writing and interesting characters...." Read more

"...Well written, great entertainment and a cast of so diverse people, but one in the desire to finish the mission...." Read more

23 customers mention "Writing quality"17 positive6 negative

Customers find the book well written, with one customer noting its great detail.

"...books are some of the best Entertainment I have read and worth the time to read them. Thank you for a very fun entertaining read." Read more

"...That demonstrates really good writing, at least to me. And don't even get me started on the subject matter. I was engrossed!..." Read more

"Could have been a good adventure but got bogged down on detail about background of various agencies and such...." Read more

"Good book with excellent writing and interesting characters...." Read more

15 customers mention "Pacing"15 positive0 negative

Customers enjoy the pacing of the book, with its fast-paced action and quick-moving plot.

"...Technique, book 12 in the Rex Dalton Thriller Series, is another unstoppable, rollercoaster thrill ride from start to finish...." Read more

"The story moved along quickly and kept me interested. In light of the recent Ukraine events the premise is more believable." Read more

"The rush of action, places and spies, plot and personalities combine in a roiling, unceasing near free-for-all of adventure and possibility in The..." Read more

"Excellent fast action, dangerous missions taken on by the best of numerous countries. Terror at every turn and quick thinking and action a must!..." Read more

15 customers mention "Development"10 positive5 negative

Customers have mixed opinions about the book's development, with some finding it well developed while others find it too technical.

"...Rex Dalton books, and all of them contain what seem to be very well researched geography, plausible plots, and extensive character development...." Read more

"...I enjoyed The Delphi Technique (I have actually used this technique); however, as action-packed as the story was, I felt the ending was a bit of a..." Read more

"...Way to much brainstorming with a lack of much going on." Read more

"...observation by no means indicates the book is not entertaining, well researched...just would like more action and interaction....the actual mission..." Read more

11 customers mention "History content"7 positive4 negative

Customers have mixed reactions to the book's historical content, with some appreciating the exciting attention to detail, while others find it bogged down with excessive historical information that distracts from the story.

"...You get a history lesson while going after the bad guys." Read more

"...Much history is included, but I found it more underbrush I like , and skimmed past some." Read more

"...This was almost all history and the action/adventure flopped." Read more

"...Small amounts of historical facts are fine, even interesting, but the amounts in this book were overwhelming...." Read more

Top reviews from the United States

  • Amazon Customer
    5.0 out of 5 stars great series
    Reviewed in the United States on April 14, 2025
    Verified Purchase
    I'm amazed that this author can write so many fantastic novels, I hope that he never stops writing. His books are some of the best Entertainment  I have read and worth the time to read them. Thank you for a very fun entertaining read.
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  • Maggie Deaton
    4.0 out of 5 stars Strong 4.5 stars....
    Reviewed in the United States on November 7, 2024
    Verified Purchase
    An excellent continuation of the Red Dalton series.... A bit less action propelled and deeper into the political spectrum than some of his books but still thoroughly enjoyable!
    Helpful
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  • Amazon Customer
    5.0 out of 5 stars Another good one!
    Reviewed in the United States on June 12, 2024
    Verified Purchase
    I have read many of Ryan’s Rex Dalton books, and all of them contain what seem to be very well researched geography, plausible plots, and extensive character development. In fact, there are usually many characters, and I sometimes forget who does what, and which organization they work for! Sometimes I worry that I won’t be able to follow the plot because of the many characters, but Ryan always gets the job done plot-wise, even when I might be a bit lost for a while. Stick with any of these books - you’ll be glad you did!
    One person found this helpful
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  • Kindle Customer
    5.0 out of 5 stars Another excellent thriller!!
    Reviewed in the United States on October 1, 2024
    Verified Purchase
    This is an outstanding book that I didn't want to put down for anything, even to go to sleep . I am looking forward to your next book in this series.
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  • Kindle Customer
    4.0 out of 5 stars A fantastic series
    Reviewed in the United States on January 9, 2025
    Verified Purchase
    This was another intense and suspenseful story with many unexpected and surprising twists that will capture you until the very end. Not a series to be missed.
    I would definitely recommend this book, series, and author.
    Helpful
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  • JWalch
    5.0 out of 5 stars Rex Dalton get's his man in a way you would never guess in a million years.,
    Reviewed in the United States on December 1, 2021
    Verified Purchase
    The Delphi Technique, book 12 in the Rex Dalton Thriller Series, is another unstoppable, rollercoaster thrill ride from start to finish. As this runaway freight train, each book in the series being a car, approaches its energy absorbing buffer stop, the careful reader will discover that Ryan uses stock exposition to work in the backstory. Only two more stops, two more books to go. He uses the same text, word for word, in each new book, but he slips it in so smoothly that the average reader will never notice. It sort of reminds me of how the early TV comedy shows made use of canned laughter. The same exposition over and over, but it worked great. I wouldn’t have caught it if I wasn’t a very experienced beta reader.

    The Delphi Techniques begin with Rex and Catia vacationing on Rhoades Island, Greece. They witness the assassination of a CIA operative and his contact by a female assassin, who commits suicide when Rex attempts to capture her. Based on the information contained on the flash drive Catia recovers from the dead contact as he laid dying in her arms, and from the two smart phones that Rex took off their dead bodies, they find themselves in another race against time to stop a madman set on murdering countless innocent people. In The Delphi Techniques, like with all the Rex Dalton thrillers, Ryan includes so much real historical facts that it’s hard for the reader to tell where history ends and fiction begins.
    While Rex and his team is racing the clock, trying to find and take down the madman who is killing and maiming hundreds of innocent men, women, and children, he is forced to take command of the CRC when John Brandt, “The Old Man” has to have brain surgery for a benign tumor. As you may recall from the last book, Brandt has been after Rex to take over as the CRC CEO/Director, but Rex has been putting off making that decision. Now he has no choice.

    All the Rex Dalton Thrillers have more plot twist than a sidewinders path in the desert sands, but this one more than most, right up to the very end. The way this book ends, the way Rex and his team take down the madman mastermind, will blow your mind. The Delphi Techniques have the most explosive ending of all the Dalton books so far. Will Ryan provide us with an even more thrilling ride in Holes In The Wall, Book 12 in the Rex Dalton Thriller Series. I know the answer to that question because this is the third time I have read the series. Keep reading to find out. You will be glad you did.
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  • boot guy reader
    3.0 out of 5 stars Potential lost
    Reviewed in the United States on September 6, 2021
    Verified Purchase
    Could have been a good adventure but got bogged down on detail about background of various agencies and such. Enjoyed previous books that relied upon the story and characters to cary the plot.
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  • rlptwo
    5.0 out of 5 stars The Seat Of My Pants Seemed To Be Glued To My Chair!
    Reviewed in the United States on October 16, 2021
    Verified Purchase
    To say that Author JC Ryan is a spellbinding writer would be an accurate but inadequate statement. As I read this book I was again awed of his ability to engross me so completely so as to lose track of time, commitments and responsibilities. I would stop my reading by citing the need to __________ (fill in a task) and barely take a step away only to return immediately to read some more! That demonstrates really good writing, at least to me. And don't even get me started on the subject matter. I was engrossed! Even when Mr. Ryan penned his disclaimer at the end of the book I was ready and hoping for more to the story. If you imagine that someone could set up the circumstance that could change the course of world history then have a small cohort of very savvy and committed individuals who could stop said coup, you'd be read that, wouldn't you? If so, read this book!
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Top reviews from other countries

  • Wendy J
    5.0 out of 5 stars Awesome
    Reviewed in Canada on February 3, 2024
    Verified Purchase
    Another book of IF Ryan that I couldn't put down! I'm losing sleep over him however, Red and the crew are definitely worth it!.. Onto the next story!
    Report
  • Anil gupta
    5.0 out of 5 stars another rex dalton and digger adventure.
    Reviewed in India on March 22, 2024
    Verified Purchase
    I am reading rex-dalton book after a long time, so it was kind of a very pleasant and wonderful experience to read. and written an engaging way., I read nonstop. Intend to revisit Rex Dalton series
    Report
  • Beecee
    5.0 out of 5 stars Loved this book
    Reviewed in Australia on September 14, 2021
    Verified Purchase
    Liked the well written plot, the fast pace and the descriptions of places across Europe. Will look for more from this author.
    Report
  • Rachel Penfold
    5.0 out of 5 stars An excellent book .
    Reviewed in the United Kingdom on July 4, 2024
    Verified Purchase
    This is a book you do not want to put down. The story is revitting, the characters engaging and are so realistic you get lost in the story. Then of course there is Digger an amazing dog.
    Just can't wait for the next book.
    Report
  • Amazon Customer
    4.0 out of 5 stars The Delphi Technique.
    Reviewed in Canada on September 14, 2021
    Verified Purchase
    (Almost finished.) Good and very instructive story, minimal typos.
    Report

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