Rosemary Hennigan is an Irish writer living in Dublin. She studied law at Trinity College, as well as the University of Pennsylvania, which she attended as a Fulbright Scholar. A qualified solicitor, Rosemary left corporate litigation to work in the NGO sector, specialising in the area of asylum, refugee rights, and homelessness.

Her first book 'The Truth Will Out' (Orion Fiction) was longlisted for the Crime Writers’ Association John Creasy (New Blood) Dagger award 2023. Her next book 'The Favourite' (Orion Fiction) will be published in Ireland/UK in January 2024 and in Australia/New Zealand in November 2023. It will be published as 'The Favorites' (Graydon House Books) in November 2023.