Oyinkan Braithwaite is the best-selling author of MY SISTER THE SERIAL KILLER (2018) which has now been translated into 30 languages and sold millions of copies. It won the 2019 LA Times Award for Best Crime Thriller, the 2019 Morning News Tournament of Books, the 2019 Amazon Publishing Reader’s Award for Best Debut Novel and the 2019 Anthony Award for Best First Novel. It was also shortlisted for the Women’s Prize for Fiction 2019, among several other prizes, and longlisted for both the Booker Prize 2019 and the 2020 Dublin Literary Award.

Oyinkan has published several short stories over the last few years for a variety of publications and platforms, including Audible and McSweeney’s. She also wrote a novella The Baby is Mine in support of adult literacy. Alongside her work as a novelist, she is also a screenwriter with two projects in development for television and one for feature film, the latter an adaptation of her first novel.

Her new novel Cursed Daughters will be published in Autumn 2025. 

She lives with her husband and daughter.