Diesel: Ironborn MC

by Reagan Phillips

They sent her to me for protection. They didn't warn her what I am.

Eden Cross interviewed the wrong inmate for research. Now a crime boss wants her dead—and I'm the only thing standing between her and the men who already tried once.

I should keep my distance. She's the witness. I'm the bodyguard. But she looks at me like I'm not a monster. She writes stories at my kitchen table and falls asleep in my arms and makes me remember what it feels like to want something I can't have.

The last person who loved me died because of it.

I won't let that happen to her.

I'll burn down anyone who tries.

DIESEL is a gruff-protector, forced proximity orc motorcycle club romance with a traumatized heroine who fights back, a hero who cooks when he can't say what he feels, and the kind of slow-burn tension that combusts.

193 pages, Kindle Edition

Published January 26, 2026

About the author

USA Today Bestselling author Reagan Phillips writes insta-love, obsessive alphas, curvy heroines, and happily-ever-afters that hit hard and fast. Her high-heat romances span motorcycle clubs, tattooed bad boys, and monster romance. Her stories that never fade to black. Her tagline? Love that breaks you before it saves you. Start with a free book: https://BookHip.com/CCKFRXD

Reviews

[Debbie · Rating 5 out of 5]

Diesel

I enjoyed returning to this Orc biker world. I like how terse the MMC is and how the MFC learns to appreciate his directness.

Her POV, him speaking,
"You walked into my home with a bag I've never seen. Someone's been selling you out. And I'm supposed to trust there's nothing in there that could get us both killed?"
He's not sorry. He's not defensive. He crosses his arms over his chest—stating his position and waiting for me to catch up.

Followed by this (her speaking first),

"You're not going to ask next time either, are you? Next time something bothers you, you're going to handle it."
"Probably."
"At least you're honest."
"Only virtue I've got.”

The situation they are dealing with as they get to know each other is interesting, and of course they are pushing each other away, so things are tense and awkward for a while. Both characters are kind of serious and sad, which makes them turning towards each other really lovely.

[Anna Cole · Rating 4 out of 5]

This was way out of my comfort zone. It’s an MC book and a monster romance, yet I really, really enjoyed this read. This wasn’t the macho-man story I thought it would be; instead, it was a story filled with vulnerability and friendship. Even though things moved fast, it all took place over a short period, and Reagan Phillips makes it work. There were one or two spicy scenes that I skipped, and it didn’t feel like I missed anything—the story more than carried me through the book. I loved the ending, and now I definitely want to read the next one.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Jenni · Rating 5 out of 5]

Eden is a thriller writer who interviews a dangerous criminal not knowing he would spill all his crimes and make her a target one given in trust to Diesel to protect, only they didn't tell her, that hes an Orc, one who lost the last person who was close to him, and doesnt interact much with Humans since, but there drawn to one another, is this just seeking comfort and protection or something far more between them. Well written engaging steamy desires, emotions, trauma and more. A great addition to the series.

[Rachel E. · Rating 5 out of 5]

I've been locked into this series since Vargan so I don't think it's any surprise that I loved this one too. I think my fav part of this series is how well matched each of the MMC and FMC are. It's not a true fated mates, but sometimes even if fate doesn't match you, it creates .... opportunity. They both needed someone to show them strength and love in a different way that they had experienced. And that's exactly what they got from each other. He saved her, and she saved him right back.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Cynthia Khan · Rating 5 out of 5]

Book 4 of Ironborn MC story of Eden Cross and Diesel. That was a page turner of excellent content, from the drama to the danger. I was shocked at what took place after the trial, that was wild and terrifying but I was jumping for justice at what happened after that. These two are wonderful characters and the romance is worth the read.

I received a free copy of this book via Booksprout and am voluntarily leaving a review.

[Lyndsay L · Rating 5 out of 5]

This was my first book from this author and I enjoyed this book a lot. The writing was very well-done and the action was non-stop. I loved the interaction between the two main characters. This series is so good I cannot wait to see where this author takes us with the rest of it. This is a must read.

[Barbara · Rating 5 out of 5]

Another great book I'm this series

Losing this series! This book,well Wow! Crime lords, witness needing security, leaks in the justice system! This book never slows down but for brief romantic interludes with a kick butt HEA.

Highly recommended.