Cassidy Freeman (born April 22, 1982) is an American actress and musician. She is known for her roles as Tess Mercer in The CW's superhero drama Smallville, Amber Gemstone in the HBO series The Righteous Gemstones, Sage in the series The Vampire Diaries, and Cady Longmire in the A&E/Netflix modern western Longmire. (Via Wikipedia)