Heart of My Monster: A Dark Mafia Romance (Monster Trilogy Book 3)

Name: Heart of My Monster: A Dark Mafia Romance (Monster Trilogy Book 3)
Price: 5.99 USD
Availability: InStock
Rating: 4.5 (21588 reviews)
Author: Rina Kent

by Rina Kent

Romance Dark Romance

4.5 (21,588)

4.5 stars from 21,588 reviews. One of the highest rated Romance books we track.

$5.99KU6% off peak

Last checked: May 21, 2026

Read free with Kindle Unlimited

Price history: $5.99 – $6.36

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Price range: $5.99 – $6.36

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Perfect for you if...

You love morally grey characters and aren't bothered by a possessive, manipulative hero if the heroine can match his intensity.
You've binged BookTok mafia romance and want a conclusion that actually delivers on the promise of the trilogy.
You're after that Mulan energy: a woman who refuses to be sidelined and a man who respects her strength even as he claims ownership.

Maybe not for you if...

You need your heroes to be fundamentally good or you struggle with consent dynamics in fiction.
You're starting the trilogy here. This is book three and will spoil major plot points from books one and two.
You prefer subtle romance to possessive declarations and want emotional nuance over dramatic claims of ownership.

About this book

Heart of My Monster is the third and final book in the Monster Trilogy. The story follows a man who claims to have no morals or feelings, driven solely by his desire to reign. His plans change when he becomes focused on reclaiming the woman he believes belongs to him. Sasha believes their conflict has ended, but the protagonist insists they are only beginning. He views her as his woman, partner, and wife. The narrative combines mafia romance elements with themes inspired by Mulan, featuring a manipulative male protagonist and a strong female character. Both the hero and heroine are equally protective of one another, and the story includes suspenseful plot elements.

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Price History

Kindle price over time. Green zones = periods when the book was free.

$5.99 – $6.36

Price has been stable at $5.99 for 3 years. This book rarely goes on sale.

Sales Rank

Amazon sales rank: lower number = better selling book. #1 is the bestseller.

Currently #1,685 in the Kindle store — a top-10K bestseller.

Rating & Reviews

Purple line = star rating over time. Blue area = total review count growth.

Currently 4.5★ from 21,588 reviews

Gaining approximately 489 new reviews per month. Reader interest is accelerating. Rating has remained stable at 4.5 over the tracking period.

Sale Prediction

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Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.