High Quality Content by WIKIPEDIA articles! Joan Tompkins, legally known as Joan Swenson was an American actress of television, film, radio, and stage, who co-founded with her husband, Karl Swenson, an acting company in Beverly Hills, California. In the 1962-1963 television season, Tompkins played legal secretary Trudy Wagner in twenty-eight episodes of Edmond O'Brien's NBC legal drama Sam Benedict, co-starring Richard Rust. From 1967-1970, she guest starred nine times as Lorraine Miller in Fred MacMurray's CBS situation comedy, My Three Sons, with her last appearance in the episode "St. Louis Blues" on December 19, 1970