Kathleen Denise Quinlan is an American actress. On House, M.D., she portrayed Arlene McNeil, the devoted wife of the immobilized Richard McNeil in the Season 3 premiere Meaning. Quinlan has had a lengthy and distinguished career, starting with a featured role in American Graffiti. She has also had featured roles in Lucas Tanner, The Waltons, Hanky Panky, Twilight Zone: The Movie, The Doors, Zeus and Roxanne, Breakdown, A Civil Action, Too Rich: The Life of Doris Duke, Family Law, Breach, Prison Break, The Event and Blue.