Sadie Kincaid

Sadie Kincaid is a romance author based in the United Kingdom, writing dark romance, mafia romance and paranormal romance or romantasy.

She began writing in 2016 and self-published the Ruthless series (New York Ruthless, Chicago Ruthless, Manhattan Ruthless) and the paranormal Broken Bloodlines series before Mira, an imprint of Harlequin, acquired world English rights to six books across Chicago Ruthless and the new Wages of Sin duology in 2025.

Her other work includes the Curse of Blood series and The Perfect Fit. She has a background in community and criminal justice.