Cassidy Freeman (born April 22, 1982, height 5' 8" (1,73 m)) is an American actress and musician. She is known for her role as Tess Mercer in The CW's action drama Smallville. Cassidy Freeman (born April 22, 1982, height 5' 8" (1,73 m)) is an American actress and musician. She is known for her role as Tess Mercer in The CW's action drama Smallville.