82 ratings | 3 reviews | avg rating:4.96

Dennis Koller’s Followers (6)

Dennis’s Bookshelves

to-read (5)
currently-reading (5)
read (92)

Dennis’s Friends (11)

Military Writers Society of America (MWSA)

869 books | 64 friends

Beverly

414 books | 128 friends

Rob Swigart

23 books | 4 friends

Judy M Reyes

473 books | 9 friends

Mike Downs

90 books | 7 friends

Karl Sjogren

38 books | 1,430 friends

Judy M Baker

332 books | 158 friends

Chris The Story Reading Ape

1,503 books | 1,580 friends

More friends…

Dennis Koller

Goodreads Author

Website

http://www.denniskoller.com

Twitter

dkollerauthor

Genre

Mystery, Thriller, Historical Fiction

Member Since

December 2013

edit data

Dennis Koller is the author of "The Oath"; "The Custer Conspiracy"; "The Rhythm of Evil"; and "One Death Too Far". He came late to novel writing, spending the first 20 years of his career life in marketing. In those years, his creative urges were assuaged by writing articles for Trade Journals, and by writing direct response appeal letters for non-profit organizations, mostly in the higher education space. His company, Pen Communication, specialized in hand-written direct response pieces used by many public broadcasting television stations around the United States of America to raise funds. He lives with his wife in the Dallas-Fort Worth metroplex. ...more

Learn more
Ask the Author

To ask Dennis Koller questions, please sign up.

Combine Editions
Dennis Koller’s books

Average rating: 4.19 · 139 ratings · 46 reviews · 5 distinct works

	The Oath: A Tom McGuire Mystery Thriller (Tom McGuire Series Book 1) 4.29 avg rating — 52 ratings — published 2001 — 5 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Kissed by the Snow (Rob Kincaid #1) 4.19 avg rating — 32 ratings — published 2014 — 3 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	The Custer Conspiracy: A Tom McGuire Mystery Thriller (Tom McGuire Series Book 3) 3.85 avg rating — 33 ratings — 3 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	The Rhythm of Evil 4.35 avg rating — 17 ratings — 6 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	One Death Too Far: A Thriller (A Red Squadron Novel Book 1) by Dennis Koller (Goodreads Author), Janie Mills (Editor), Raeghan Rebstock (Illustrator) it was amazing 5.00 avg rating — 5 ratings — 2 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars

More books by Dennis Koller…

19 posts
Dennis Koller's Blog

Taking the Time to Share your Gratitude

Taking the time to share your gratitude with others takes a moment, but the impact may be long lasting. We never truly know what someone might be going through. A small act of kindness could be the exact encouragement they need in that moment. 💛 Everyday Ways to Show Gratitude:✅ Write and send a complimentary…

View more on Dennis Koller's website »

Like • 0 comments • flag

Published on November 24, 2025 14:48

View all 19 posts »

Dennis is Currently Reading

Dennis Koller is currently reading

One Death Too Far: A Thriller (A Red Squadron Novel Book 1)

by Dennis Koller (Goodreads Author)

bookshelves: currently-reading

Rate this book

Clear rating

1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars

Sep 08, 2025 06:00PM

Dennis Koller is currently reading

The Reckoning

by John Grisham (Goodreads Author)

bookshelves: currently-reading

Rate this book

Clear rating

1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars

Apr 19, 2021 07:19PM

Dennis Koller is currently reading

Unto the Sons

by Gay Talese

bookshelves: currently-reading

Rate this book

Clear rating

1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars

Apr 17, 2019 12:33PM

rss
Dennis’s Recent Updates

Dennis Koller liked Adams Hub's review of One Death Too Far: A Thriller (A Red Squadron Novel Book 1): "Explosive action with moral depth. What stood out most was how the book balances revenge with doubt—Mac isn’t just fighting the cartel, but questioning the very agency he’s working for. The betrayals and shifting loyalties keep the tension high right" Read more of this review »
Dec 09, 2025 07:58PM · see review
Dennis Koller liked Mandy Lehti's review of One Death Too Far: A Thriller (A Red Squadron Novel Book 1): "One Death Too Far by Dennis Koller is a pulse pounding, deeply emotional thriller that explodes straight out of the gate and never eases its grip. Ken “Mac” McArthur is a phenomenal lead equal parts disciplined operator and grieving son and his trans" Read more of this review »
Dec 08, 2025 05:06PM · see review
Dennis Koller liked MANUEL SARDINAS's review of One Death Too Far: A Thriller (A Red Squadron Novel Book 1): "Engaging & Enthusiastic A gripping thriller from start to finish! One Death Too Far masterfully blends suspense, emotion, and intricate storytelling. Every chapter adds another layer of mystery, and just when you think you’ve figured it out — another " Read more of this review »
Dec 08, 2025 05:06PM · see review
Dennis Koller liked Gary Seiser's review of One Death Too Far: A Thriller (A Red Squadron Novel Book 1): "Ripped from the shadow world behind today’s headlines, Dennis Koller’s One Death Too Far is a tight, well-paced, and intriguing thriller. It’s got drug cartels, special operators, politics, and a son’s search for his father’s killer. Perfect for fans" Read more of this review »
Oct 21, 2025 02:32PM · see review
Dennis Koller started reading One Death Too Far: A Thriller (A Red Squadron Novel Book 1) by Dennis Koller (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Sep 08, 2025 06:00PM · like
Dennis Koller wants to read The Rhythm of Evil by Dennis Koller (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Jul 28, 2025 07:52AM · like
Dennis Koller wants to read One Death Too Far: A Thriller (A Red Squadron Novel Book 1) by Dennis Koller (Goodreads Author)	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Jul 28, 2025 07:52AM · like
Dennis Koller has read Hidden Memories by Michael D. Smith	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
Sep 16, 2024 01:15PM · like · preview book See a Problem? We’d love your help. Let us know what’s wrong with this preview of Hidden Memories by Michael D. Smith. Problem: Details (if other): Thanks for telling us about the problem. Not the book you’re looking for? Preview — Hidden Memories by Michael D. Smith <iframe sandbox id="wrongBookKindlePreviewScreen">