Her Favorite Therapist: A Psychological Thriller

Mia Thorton #5

by Magdalin Laine

Marriage was never easy for the DeLuca’s, but after the last murder, Mia is ready to quit.
Fuck the contract, fuck appearances, and fuck her husband.
She has nothing left to lose.
But Kit won’t let go. And all the trouble only lands her in the cruelest punishment of couples therapy.
Dr. Mackay comes highly recommended. Esteemed, unshakable, and bound by ethics. He’s determined to stay neutral as he guides them towards healing. And most importantly, he’s no stranger to the unspoken family business.
But with a patient like Mia, hellbent on self-sabotage and destructive patterns, conventional tactics won’t cut it. If he wants to reach her, he’ll have to bend the rules and try an unorthodox type of treatment.
Will his unusual methods break through to her?
Will he be able to salvage the broken person she’s become?
Or is he going to fall victim like everyone else in her game of love?

319 pages, Kindle Edition

Published March 2, 2026

About the author

Magdalin Laine leads a boring life which is why she writes outrageous romances. Many of her stories start with favorite cliches and quickly spin into one scandalous situation after another. The emotions are always high, the intensity builds to a fever pitch, and readers should expect that anything can happen. If you're looking for a darker kind of romance in your life, then you need to read her books.

She enjoys rollerskating and making silly tiktoks in her free time.

Reviews

[Bella · Rating 5 out of 5]

⭐⭐⭐⭐⭐ Five-Star Review

Her Favorite Therapist: A Psychological Thriller by Magdalin Laine is dark, provocative, and psychologically unhinged in the most delicious way. This book messed with my head and I loved every second of it.

From the opening pages, you’re dropped into a marriage already cracked beyond repair, drenched in secrets, violence, and emotional decay. Mia DeLuca is not a “likable” FMC and that’s exactly what makes her fascinating. She’s sharp-edged, self-destructive, and brutally honest about her desire to burn everything down. Her voice bleeds rage, pain, and control, and you can’t look away.

Enter Dr. Mackay calm, composed, and supposedly bound by ethics. The therapy sessions are where this story truly shines. The power dynamics, the manipulation, the blurred lines between healing and obsession… it’s a slow psychological unraveling that feels intimate, tense, and deeply uncomfortable (in the best thriller way). Every interaction crackles with danger, and you’re constantly questioning motives, reliability, and who actually holds the power.

What impressed me most was how the book refuses to play it safe. This isn’t a clean psychological thriller it’s messy, morally gray, and emotionally invasive. The “unorthodox treatment” isn’t just a plot device; it’s a descent. And watching whether Mia is being saved, studied, or consumed kept me hooked until the very last page.

If you love dark psychological thrillers, morally questionable characters, taboo tension, and stories that crawl under your skin and stay there, Her Favorite Therapist is a must-read. Disturbing, addictive, and impossible to forget. 🖤🔥

*I received an advance review copy for free, and I am leaving this review voluntarily.*

[Lily · Rating 5 out of 5]

I can honestly say I'm officially addicted to this series! Mia is young, but has had so much happen in her life. Kit is as possessive as ever, and holding tight to her. I found the introduction of a therapist an interesting hook, and the opening chapter really sets the stage. The book moves at a smooth pace, and while there are brighter moments, there are a lot of darker ones. Mia has left so many bodies in her wake, and while I love her as a character, I don't think I'd like her very much in real life! I have to applaud Laine for creating such complex characters, and still managing to throw some twists into the story on book five of the series. A final warning: this is a dark romance, but if you don't mind morally questionable characters, a bit of murder, and more, then you're going to love this!

[SusanT62 · Rating 4 out of 5]

Mia and Kit are going to couples’ therapy. They are having issues with their marriage. Dr. Greer Mackay is the therapist.

I enjoyed Mia. She doesn’t have a filter. This book is really about her. Her husband and the therapist are secondary to her. She seems to be able to draw men in and drive them insane. No one is safe not even Dr. Mackay.

This was a crazy book in a good way. The story draws you in as Mia has issues. It is fast paced and we learn about her past. There is lots of spicy action. Apparently this is the latest book in the series featuring Mia so I might just put the previous books on my TBR list.

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

[Noe · Rating 4 out of 5]

“Dangerous Therapy” is a dark, addictive romance that blends tension, psychological intrigue, and sizzling chemistry. Mia is a fierce, self-destructive force, and Kit’s persistence adds a dangerous edge to every scene. Enter Dr. Mackay: calm, ethical, and unshakable—but navigating Mia’s chaos requires bending every rule. The story balances suspense, emotional intensity, and taboo attraction, keeping readers on edge from start to finish. Perfect for fans of twisted romance, power dynamics, and characters who test every boundary of love and loyalty.

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

[Pheadra · Rating 4 out of 5]

I received an advance copy of this book and am leaving this review voluntarily.
Different is how I would describe this book about a marriage on the rocks and the impact therapy in the right or wrong hands can have.
Will conventional ambivalence serve the psychotherapist, or must he employ extreme tactics to impact his patient? Moreover, is this a case of the tail wagging the dog? What came to mind more than ever for me was the saying that those who go into mental health do so because they themselves are in need of mental health help. 4 stars

[SubconsciousShelf · Rating 5 out of 5]

Dark, Twisted, and Completely Addictive

A razor‑sharp, emotionally charged installment that pulls you straight into Mia’s unraveling world. The tension between her crumbling marriage, the suffocating family power plays, and Dr. Mackay’s dangerously unorthodox approach makes this book impossible to put down. Every chapter tightens the psychological stakes, blurring the line between healing and obsession in the most compelling way. A bold, gripping, and unforgettable addition to the series.

I received an advance review copy for free, and I am leaving this review voluntarily.

[The Book Ssirren · Rating 4 out of 5]

This is a dark psychological thriller like none I’ve ever read before. Mia is a force to be reckoned with. She’s walking destruction. This story was intense. The way therapy went wasn’t what I was expecting. But then again, I wasn’t sure what I was in for when I started this. But this did not disappoint. It immediately pulled me in and kept me needing to know what was going to happen next.
Very unique and steamy approach to deconstructing Mia, that’s for sure. The spice was top notch. I was obsessed with this one.

[Magdalin Laine]

I wrote this book so I'm going to throw five stars at it, haha. But in all honesty, I'm really excited as I go through the last edits and revisions before bringing this book to the world and letting y'all read it. I had a lot of fun with it, the plot is unhinged, over the top, the steamy scenes are intense, the moments are drawn out, and the characters get exactly what they ask for and then regret it.

All these books are trauma porn, but this one is peak.

[PugLover · Rating 4 out of 5]

Kit forces his wife Mia to go to couples therapy but he has no idea what he's started. Mia continues to see Dr. Mackay with and without Kit. Dr. Mackay claims he just wants to help Mia but the moment she tries to cancel appointments he flips. Now it's Dr. Mackay's word against Mia's. Who knew that the therapist was worse off than the patient. Apparently, he just knew how to hide it better.

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

[Jessica · Rating 4 out of 5]

Like all the previous Mia Thorton books, I liked this one a lot!
It has been fun going through Mia’s life with such a different concept every time and seeing her growth!
This one was extra wild and I didn’t really expect the turn of events. This one ended with a nice, but dark and twisted, HEA for Mia!
I guess the therapy worked after all!

[Vivien R · Rating 5 out of 5]

This was a great book. It was not what I expected going into it. But I loved the plot and the characters were complex and interesting.

[Holly · Rating 5 out of 5]

This book made me feel literally everything that was said to happen to the FMC which in this situation was not really good. This book had such a huge plot twist that I literally had to put my kindle down and breathe and think about it because.. what??
This book is really good for absolutely everyone who has ever gone to a therapist of had ever felt struggles in a relationship.
Really really amazing book