Below is the complete list of L.A. Ruthless books in reading order, presented in publication order for the series by Sadie Kincaid. This is the recommended reading sequence for the series.
L.A. Ruthless Series
- Fierce King (2021)
- Fierce Queen (2021)
- Fierce Betrayal (2022)
- Fierce Obsession (2022)
About L.A. Ruthless Series
Sadie Kincaid’s L.A. Ruthless is a dark mafia romance series built around the Montoya crime family, and that family focus is what gives the series its shape. It is not a single-couple duet, and it is not a loose collection of unrelated standalones that merely share a city label. The core sequence runs across four books: Fierce King, Fierce Queen, Fierce Betrayal, and Fierce Obsession. Official and retail listings also make clear that the series is tied to the Montoya family, which is the key to understanding why the books are best read in order.
The first two books form one obvious internal arc. Sadie Kincaid’s own sales page labels the line “L.A. Ruthless: Fierce Duets,” which is a useful clue: Fierce King and Fierce Queen belong together, and they establish the family power structure and emotional tone that define the series. The later pair, Fierce Betrayal and Fierce Obsession, continues within the same world rather than restarting it from scratch. That structure means publication order matters even if the series is not one uninterrupted romance stretched across all four books. It is a connected family saga with distinct relationship arcs inside it.
That family-based design is one of the reasons L.A. Ruthless fits so naturally into the darker side of contemporary romance. Mafia series often work best when each book can deliver its own central couple while still deepening the larger family empire around them, and that appears to be exactly what Kincaid is doing here. The books are marketed with tropes such as forced marriage, dark mafia romance, and later a dad’s-best-friend age-gap setup, which signals a series driven by danger, possessiveness, shifting loyalties, and emotionally high-pressure relationships. This is not restrained romantic suspense. It is built for intensity.
Publication order matters because the appeal of a series like this comes from accumulation. The first books establish who holds power, who belongs inside the family circle, and what kind of emotional world the reader is entering. Later books gain force because those relationships, grudges, and loyalties are already in place. Even if a reader could technically follow an individual romance out of sequence, doing so would flatten the family dynamics that give the series its larger identity. A mafia family line is strongest when it feels like one living world rather than four isolated premises.
Within Sadie Kincaid’s wider bibliography, L.A. Ruthless also makes sense as one branch of her broader “Ruthless” branding. Her official site groups it alongside London Ruthless, New York Ruthless, Chicago Ruthless, and Manhattan Ruthless, which suggests a larger author pattern: city-based dark romance series with strong tonal identity and clear series packaging. But L.A. Ruthless has its own distinct center in the Montoya family, which keeps it from feeling like a generic extension of that label.
Taken as a whole, L.A. Ruthless is best understood as a connected four-book mafia romance series with two linked internal pairings and one shared family power structure. That makes the reading order straightforward, but still important. The books are not simply grouped together for branding convenience; they are designed to build on one another through the Montoya family’s world, making publication order the clearest way to preserve the series’ intended momentum and payoff.