Catherine Walker (born 1975) is an Irish actress. She is notable for British and Irish television appearances including The Clinic (2003–2009), Northanger Abbey and Waking the Dead (2007), Bitter Sweet (2008), Lewis (2009), The Silence (2010), Strike Back (2013), Critical (2015), A Dark Song (2016) and The Curse of Audrey Earnshaw (2020). More recently, she appeared as Madame Scarron/Madame de Maintenon in series 2 and 3 of the TV series Versailles. She also appeared as Alice Brooks in Series 5 of the BBC drama Shetland. In 2020, she appeared for 3 episodes in the Netflix series Cursed as the recurring character, Lenore, the mother to Nimue from the legends of King Arthur. She also had a minor role in the Ridley Scott directed House of Gucci, playing Anna Wintour, the editor-in-chief of Vo