Born in Santa Monica, CA; alumna of Hollywood High School. Dorn grew up with the film industry in her blood. Her father worked as a set builder/designer and later as a movie producer. She was still in high school when she began working at his sound stage, Hollywood Stage, where she made the contacts that would ultimately allow her to find work in her chosen field -- motion picture editing. After working a number of production positions, including assistant to the producer, script supervisor and assistant location manager, as well as production assistant on "Elvis" , (the 1979 John Carpenter MOW), she was offered the chance to assist that film's editor, Chris Holmes. Dorn found a home in the cutting room. Film editor who entered American film as a production assistant for TUNNEL VISION (1976). She became an assistant sound and film editor in the late 1970s. Sound editing credits include SCAVENGER HUNT (1979), MAX DUGAN RETURNS and THE BIG CHILL (both 1983, both asst. sound editor), RACING WITH THE MOON (foley editor), CHOOSE ME, MRS. SOFFEL (dialogue editor) and SONGWRITER (all (1984), SILVERADO and TROUBLE IN MIND (both 1985), CHILDREN OF A LESSER GOD (1986), THE BIG EASY, BACK TO THE BEACH and MADE IN HEAVEN (all 1987), THE MODERNS, TAPEHEADS and MADE IN USA (all 1988), POWWOW HIGHWAY (1989), STATE OF GRACE (1990) and RUBY CAIRO (1993). Assistant film editing credits include METEOR (1979), ROADIE (1980, 2nd asst. film editor), HIGH RISK (1981) and ENDANGERED SPECIES (1982). Full film editing credits include TERMINATOR 2: JUDGMENT DAY (1991), FLOUNDERING (1994), TUESDAY MORNING RIDE and BLAH BLAH BLAH (both 1995), A SMALL DOMAIN, EXIT and GUY (all 1996), SICK: THE LIFE & DEATH OF BOB FLANAGAN, SUPERMASOCHIST, PRAGUE DUET and HAPPENSTANCE (all 1997), I WOKE UP EARLY THE DAY I DIED and SLEEPING BEAUTIES (both 1998), TREASURE ISLAND, GUEINEVERE and CLARA (all 1999), MEMENTO (2000), SLEEPY TIME GAL, WAITING FOR GODOT and "Life with Judy Garland: Me and My Shadows" (TV) (all 2001), INSOMNIA (2002), MATCHSTICK MEN (2003), KINGDOM OF HEAVEN (2005), A GOOD YEAR (2006), YEAR OF THE DOG (2007), and AUSTRALIA (scheduled for release in 2008).  Nominated for Achievement in Film Editing 2001: MEMENTO 1 nomination