Manhattan Ruthless Books in Order

Manhattan Ruthless trades mob meetings for board meetings, following the James family as they run a powerful New York business empire. The brothers at the centre of the series are as cut-throat in the boardroom as any mafia boss, but their battles are fought with contracts, mergers and family expectations instead of bullets.

Underneath all the gloss, these are still Sadie Kincaid stories—full of messy feelings, scorching chemistry and people learning how to be vulnerable without losing their edge.

Broken kicks things off with a classic marriage-of-convenience setup. After their father insists on an heir for the company, one of the James brothers strikes a very practical deal with Melanie Edison, a vet nurse whose smart mouth and strict no-sex-before-marriage rule complicate everything. What starts as a tidy contract quickly turns into something heartbreakingly real, forcing both of them to question the rules they live by.

In Promise Me Forever, another James brother finds himself unexpectedly reunited with a woman he thought he’d never see again—only to discover she’s now working as his assistant. Office politics, unresolved attraction and questions about trust all simmer beneath the surface. Rebound goes in a different direction, following a long-married couple on the brink of divorce who end up having an “affair” with each other while the lawyers draw up papers, testing whether love and shared history are enough to rebuild what they’ve broken.

Later books like Played and Made push the family saga further. Played gives Mason James his turn in the spotlight as a no-strings, no-feelings dater who’s forced to work with the one man who shattered his heart years ago, turning a corporate sabotage plot into a second-chance queer romance. Made promises to tie up loose ends and show what it really means to be made in a world where power, legacy and love keep colliding.

Throughout the series, Kincaid mixes billionaire tropes—private jets, luxury apartments, high-pressure careers—with emotional through-lines about loyalty to family versus loyalty to yourself. Cameos from her mafia characters remind you that this is the same universe, just a different corner of it, and that ruthlessness doesn’t only belong to men with guns.