An emotionally intense romantic suspense packed with morally gray characters, complicated love, and incredible narration.
Release date: February 12, 2026
Genre: Contemporary Romance
Narrators: Andi Arndt and Thomas Oakley
Synopsis:
I killed a man.
That’s what they charged me with after finding me in the woods with a bloody knife, a dead body, and no memory of how I got there.
The case was over before it began…
until Ryker Kincaid stepped in.
Chicago’s most ruthless defense attorney.
My brother’s best friend.
The only man I ever loved.
He shouldn’t touch me.
Shouldn’t move me into his penthouse.
Shouldn’t look at me like I’m something worth saving.
But he does.
Ryker believes I’m innocent, and he’s risking everything to prove it.
His career. His reputation. His heart.
The price he demands is the truth.
Every secret. Every dark corner of my past.
But I learned a long time ago that honesty makes people leave.
I survived them all walking away.
I won’t survive losing Ryker.
So when the truth finally surfaces, there’s only one question
Will Ryker choose to stay…
or will I lose the only man who ever made me believe I was worth loving?
From an International & Amazon Top 25 Bestselling Author, DOUBT is a brother’s best friend romance featuring a grumpy, morally gray defense attorney.
✔️ Brother’s Best Friend Forbidden Romance
✔️ “Touch Her and Die” Energy
✔️ Possessive, Protective, Morally Gray Hero
✔️ Grumpy Hero
✔️ Secrets, Lies & Hidden Pasts
✔️ Forced Proximity & Protective Sanctuary
Standalone. Addictive, edge-of-your-seat HEA.
Trigger Please visit the author’s website for the full list.
Review:
I’ve had the best time with Kathy Lockheart’s Sinners and Saints series, especially on audio, and Doubt was another fantastic addition! This is one of those series I really think is best experienced in order because the characters and their complicated relationships are such a huge part of the appeal. Four books in, I’m still completely invested, and the morally gray men continue to be one of my favorite things about these stories.
Faith and Ryker are two incredibly complex, messy, and damaged people, and I found them both fascinating. Their relationship is anything but simple, especially with so much history, emotional baggage, and uncertainty between them. I loved how complicated they were individually and together. Neither character has everything figured out, and that vulnerability made their story all the more compelling. There is something so addictive about characters who are deeply flawed but still desperately want to love and be loved.
This installment felt particularly high stakes, emotional, and raw. Between the murder accusation, buried secrets, and complicated feelings, there was so much tension running throughout the story. Lockheart does such a great job balancing the suspense with the romance, giving readers plenty of reasons to become invested in both the mystery and the relationship. And, as always, the morally gray men in this series are absolutely delivering!
The audiobook deserves its own round of applause. Andi Arndt and Thomas Oakley were phenomenal as Faith and Ryker. These are emotionally demanding roles, and both narrators captured the messiness, pain, vulnerability, and intensity of their characters so beautifully. Their performances brought an extra layer of depth to an already emotional story, and I really can’t recommend experiencing this series on audio enough.
Perfect for readers who love:
- Morally gray heroes with complicated pasts
- Brother’s best friend romance
- Romantic suspense with high emotional stakes
- Messy, damaged, deeply compelling characters
- Audiobooks with outstanding emotional performances
Overall rating: 4/5
Thanks to Must Love Audio for my review copy.
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