Catherine Ryan Howard is an internationally bestselling crime writer from Cork, Ireland. Her most recent novel, 56 Days, was named a best thriller of 2021 by the New York Times, the Washington Post, and the Irish Times; was an Irish number one bestseller; and won Crime Novel of the Year at the Irish Book Awards. Her previous work has been shortlisted for the Edgar Award for Best Novel and CWA's John Creasey New Blood and Ian Fleming Steel Daggers, and she's been shortlisted for the Irish Crime Novel of the Year multiple times. She lives in Dublin.