Mr. Sin: Book One of the Sin Series

Name: Mr. Sin: Book One of the Sin Series
Price: 0.99 USD
Availability: InStock
Rating: 4.5 (11716 reviews)
Author: S.J. Tilly

by S.J. Tilly

Contemporary Fiction Dark Romance

4.5 (11,716)

4.5 stars from 11,716 reviews. One of the highest rated Contemporary Fiction books we track.

$0.99KU80% off peak

Last checked: Jun 23, 2026

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Price history: $0.99 – $4.99

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Price range: $0.99 – $4.99

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Perfect for you if...

You love dark romance with genuine stakes, where the chemistry is explosive but the consequences are real.
You're drawn to morally grey male leads who challenge the heroine's values and force her to grow.
You want a slow-burn tension that spans multiple books and keeps you invested in whether they'll actually survive their own relationship.

Maybe not for you if...

You prefer safe, predictable romance where the biggest conflict is a misunderstanding easily resolved by talking.
You need your heroes to be unambiguously good people without sketchy pasts or questionable choices.
You dislike cliffhangers or prefer standalone stories with complete resolutions.

About this book

A woman encounters a man at a bar and, despite her better judgment, spends a passionate night with him before planning to return to her ordinary life the next morning. She believes their encounter will be a one-time event. Unexpectedly, she encounters him again in an unlikely place, disrupting everything she has worked to build. The two find themselves unable to stop what they have started, but their connection becomes complicated by circumstances larger than themselves. When his past resurfaces, their relationship faces serious threats, and love alone may not be sufficient to protect her from the consequences.

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Price History

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

$0.99 – $4.99

Currently on sale at $0.99 — 80% off peak. Price has dropped 3 times over the last 5 years. Goes on sale roughly every 530 days.

Sales Rank

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

Currently #5,837 in the Kindle store — a top-10K bestseller. Sales have softened 277% recently.

Rating & Reviews

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

Currently 4.5★ from 11,716 reviews

Gaining approximately 270 new reviews per month. Reader interest is accelerating. Rating has remained stable at 4.5 over the tracking period.

Sale Prediction

Actual Predicted

This book is currently discounted at $0.99. 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.

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