Catherine Ryan Howard

Catherine Ryan Howard is an award-winning, no. 1 bestselling thriller writer from Cork, Ireland. Her novels have been included in the New York Times Best Thrillers of the Year, the Washington Post’s Best Mysteries and Thrillers of the Year and the Sunday Times Best Thrillers of the Year. Her work has been shortlisted for the Edgar Award for Best Novel, the CWA New Blood and Ian Fleming Steel Daggers, and the Irish Crime Fiction Book of the Year multiple times. She is published in 20 languages and a number of titles are being developed for screen. An adaptation of her lockdown thriller, 56 DAYS, starring Dove Cameron and Avan Jogia, will debut exclusively on Amazon Prime Video in early 2026. She lives in Dublin.