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Trinitarian Knights Collection · Book One

Avenging
Love

He was chosen by God to keep the balance of good and evil on Earth.
Then they took his wife — and he reached for a bottle.
Duke had other ideas.

Urban Fantasy · Spiritual Warfare · Redemption · A Dog With a Vendetta
Avenging Love by Kevin M. Mansoor
Top 10
Amazon Christian Fantasy
3 Years
Consistently Ranked
Free
Always · Permafree on Kindle
4 Books
The World’s First 4-Book Trilogy
The Story

A knight. A demon. A man who forgot who he was.

David was one of only two Trinitarian Knights on Earth — people chosen by God who can see demons and angels in our realm. His companion was Sarah. His dog was Duke. His purpose was clear.

Then Satan took Sarah. And David took to tequila.

Think Constantine with heart — urban fantasy that doesn’t shy away from faith, but wears it lightly enough that readers of every stripe find themselves rooting for the same broken man to get back up.

It’s a fast read. It’s funny in the dark places. It hits harder than it looks.

⚔️
David
Trinitarian Knight. Recovering drunk. The man who has to go to Hell — literally — to get his wife back.
🐕
Duke
Knight’s Companion. Can sense demons before they materialize. Has a passion for demon thigh and a personal vendetta with Hell Hounds. He blames himself for Sarah’s loss — and he’s done waiting.
👁️
Emma
2,000 years old. Holds the answer to the mysterious scroll. Knows more than she’s telling.
😈
Saraphiss
David’s nemesis. A demon who knows exactly which wounds to press.
What lives inside this book

Six Things That Stay With You

🔥
Redemption
Not the easy kind. The kind that costs something real and demands the whole man.
❤️
Love Worth Fighting For
A marriage that death couldn’t end and Hell isn’t strong enough to keep.
✝️
Faith
Christian at its bones — but it doesn’t preach. It shows. That’s the difference.
🐕
Duke
A dog character so good readers write reviews just to talk about him.
⚔️
Spiritual Warfare
The veil between worlds is thin. The battles are real, fast, and mean something.
😂
Humor
Dark themes, light touch. Kevin Mansoor has never written a book that didn’t know how to laugh.
Reader Voices

What Readers Are Saying

★★★★★
“Think Constantine meets C.S. Lewis — with a dog who steals every scene and a story that sneaks up on you emotionally.”
Amazon Verified Reviewer
★★★★★
“I’m not religious and I loved every page. The humor caught me completely off guard. Duke is one of the best characters I’ve read in years.”
Amazon Verified Reviewer
★★★★★
“Fast, funny, and genuinely moving. The faith elements are woven in naturally — it never feels like a sermon. Just a really good story.”
Amazon Verified Reviewer
★★★★★
“I read it in one sitting. The redemption arc hits hard, Duke is absolutely iconic, and the ending sent me straight to Book Two.”
Amazon Verified Reviewer
The Complete Collection

The Trinitarian Knights

The world’s first 4-book trilogy. (Yes, he knows.) · Read in the order shown below.

Avenging Love
Start Here
Avenging Love
Free Download ↗
Protecting Love
Read Second
Protecting Love
View on Amazon ↗
The Deception of Fear
Book Two
The Deception of Fear
View on Amazon ↗
Buried Within
Book Three
Buried Within
View on Amazon ↗
From the Blog

The Themes Behind the Story

All Posts →
Redemption
Why Redemption Stories Only Work When the Fall Is Real
David isn’t broken for dramatic effect. He’s broken the way real people break — quietly, then all at once. Here’s why that matters for the story.
Read More →
Faith
Writing Christian Fantasy Without Scaring Away Everyone Else
The tightrope walk of writing a book with genuine faith at its core — while making sure readers of every background feel at home in the story.
Read More →
Duke
Why Duke Is the Heart of Avenging Love
He didn’t start as the emotional center of the book. Then he wouldn’t stop being exactly that. On writing a dog character who earns his own redemption arc.
Read More →

Stay in the World

New books, behind-the-scenes writing notes, and the occasional update on Duke’s ongoing vendetta with Hell Hounds. Join Kevin’s author newsletter and stay current with everything in the Trinitarian Knights universe — and beyond.

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