Below is the complete list of Sadie Kincaid books in order. For each series, the chronological reading order is the same as the order of publication.
Publication Order of A Curse of Blood Books
with L.J. Morrow
Publication Order of Bound and Broken Books
as K.C. Moore
Publication Order of Broken Bloodlines Books
Publication Order of Chicago Ruthless Books
Publication Order of Darkness Reborn: Broken Bloodlines Books
Publication Order of L.A. Ruthless Books
Publication Order of London Ruthless Books
- Heart of a Devil (2025)
Heart of a Devil is a 2025 release and appears as book #3 in the London Ruthless series.
Publication Order of Manhattan Ruthless Books
Publication Order of New York Ruthless Books
Publication Order of Standalone Novels Books
About Sadie Kincaid
Sadie Kincaid is a British romance author best known for dark, high-intensity love stories built around morally grey heroes, strong heroines, family power, danger, loyalty, and emotional obsession. Her books sit mainly in the dark romance, mafia romance, billionaire romance, and paranormal romance spaces, with a readership that follows her for dramatic stakes, possessive relationships, and fast-moving series worlds where romance is often tied to violence, revenge, secrets, and complicated family bonds.
Kincaid’s best-known work is the New York Ruthless series, beginning with Ryan Rule. The series follows Jessie Heaton and the powerful Ryan brothers, using a reverse-harem mafia setup to create a story built around protection, trauma, loyalty, and the blurred line between danger and devotion. The Ryan books became a major part of her popularity, especially among readers who enjoy dark romance with an ongoing relationship arc rather than a completely new couple in every installment. Titles such as Ryan Redemption, Ryan Retribution, and Ryan Reign helped turn the series into one of the central pillars of her bibliography.
From there, Kincaid expanded the Ruthless world through connected mafia series set in other cities. Chicago Ruthless begins with Dante and moves into another powerful criminal family environment, while L.A. Ruthless, London Ruthless, Manhattan Ruthless, and later related series continue developing the kind of interconnected romance universe her readers expect. These books are usually best understood through their series groupings, because family links, criminal alliances, rivalries, and shared power structures often give the stories more context than the individual titles alone.
Kincaid’s fiction is not limited to mafia romance. The Perfect Fit became one of her most widely recognized standalone titles, showing her ability to write outside a strictly organized-crime framework while still keeping the intensity, emotional pressure, and unconventional relationship dynamics that define her brand. She has also written paranormal romance, including the Broken Bloodlines books, where supernatural elements, bloodline conflict, and darker romantic tension take the place of mafia-family politics.
Her author identity is closely tied to bold character dynamics. Kincaid often writes heroines who are wounded, defiant, or underestimated, then places them opposite men who are dangerous, powerful, and emotionally difficult but fiercely devoted once they commit. The attraction in her books is usually not gentle or understated; it is heightened by risk, secrecy, wealth, violence, and the pressure of living in worlds where love can become both a weakness and a weapon. That makes her work more suitable for readers who already know they enjoy darker romance tropes rather than soft contemporary romance.
In 2026, Kincaid also moved further into traditional publishing with The Auction, the opening book in the Wages of Sin series. That development marked a broader stage in her career, bringing the kind of dark, dramatic romance associated with her independent publishing success into a wider print-market space. The book’s Beauty and the Beast-influenced mafia premise fits naturally with her established strengths: danger, isolation, power imbalance, emotional damage, and a heroine forced to navigate a world that is both threatening and magnetic.
Sadie Kincaid’s bibliography is best understood as a set of connected dark-romance worlds rather than a simple list of unrelated love stories. Her strongest appeal lies in intensity: high-stakes relationships, powerful families, morally complicated men, resilient women, and plots where romance develops under pressure rather than in safety. For readers following her books in order, the key is usually to keep each series together, especially the Ruthless titles, because Kincaid’s worlds often gain their force from family ties, recurring power structures, and emotional consequences that carry from one book to the next.