Twenty-four Three (Assassin's Heart Book 1)

Name: Twenty-four Three (Assassin's Heart Book 1)
Price: 2.99 USD
Availability: InStock
Rating: 4.6 (2037 reviews)
Author: Mills, K.C.

by Mills, K.C.

Thriller Dark Romance

4.6 (2,037)

4.6 stars from 2,037 reviews. Top 80% of Thriller books we track.

Published by MillsWrites

$2.9940% off peak

Last checked: Apr 24, 2026

Price history: $2.99 – $4.99

Buy now — this is the lowest price we've seen.

Price range: $2.99 – $4.99

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Perfect for you if...

You enjoy romantic tension between characters forced into close quarters, especially when one of them is dangerous and guarded.
You're drawn to crime thrillers where the relationship between two people matters as much as the danger closing in around them.
You like protagonists with morally grey edges who find unexpected humanity through connection with someone they never planned to let in.

Maybe not for you if...

You prefer cosy mysteries or light romance without serious violence or criminal elements at the core.
You need a slow burn so slow it spans multiple books before any real tension develops between leads.
You want standalone novels rather than series openers that leave threads deliberately unresolved.

About this book

An injured hitman named Carter Reed is mistaken for someone else and shot, then finds himself dependent on a stranger named McKenna Smith for survival. Carter is reluctant to trust anyone, but his attraction to McKenna complicates his usual approach. He must decide whether to accept her help or risk his life by refusing it. With a life hanging in the balance, Carter faces a critical choice that could determine whether he survives.

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Price History

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

$2.99 – $4.99

Currently on sale at $2.99 — 40% off peak. Price has dropped 1 time over the last 3 years. Typically stays discounted for 66 days.

Sales Rank

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

Currently around #106K in the Kindle store — a niche title. Sales have softened 242% recently.

Rating & Reviews

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

Currently 4.6★ from 2,037 reviews

Review activity has been quiet recently. Rating has dipped slightly from 4.8 to 4.6.

Sale Prediction

Actual Predicted

This book is currently discounted at $2.99. It typically returns to around $4.99.

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.