Kelly Reilly — Biography

Jessica Kelly Siobhán Reilly made her screen debut in 1995 on the series The Biz. Her television credits include prominent roles in the British crime drama Above Suspicion from 2009 to 2012, the American psychological medical drama Black Box in 2014, the anthology crime series True Detective in 2015, and the historical fantasy drama Britannia in 2018. She has portrayed Beth Dutton on the neo-Western series Yellowstone, starring alongside Kevin Costner, since 2018. Reilly's film career kicked off in 2000 with the English comedy Maybe Baby. She later appeared in the romantic drama Pride & Prejudice in 2005, secured a leading role in the horror thriller Eden Lake in 2008, played Mary Morstan in Sherlock Holmes in 2009 and its sequel Sherlock Holmes: A Game of Shadows in 2011, starred in Flight alongside Denzel Washington in 2012, and featured in the thriller 10x10 with Luke Evans in 2018. She received a Laurence Olivier Award nomination for her role in After Miss Julie at the Donmar Warehouse between 2003 and 2004. As of October 2025, Kelly has gathered 1.1 million followers on her Instagram account.