Duane has worked in television since the early 1980s, initially becoming involved in script work at the
Hanna-Barbera animation studio (now
Cartoon Network). After writing numerous scripts for such series as
Scooby and Scrappy-Doo,
Captain Caveman,
Space Stars,
Fonz and the Happy Days Gang,
Biskitts, and
Laverne and Shirley in the Army, she moved on to work in development and serve as a staff writer at
Filmation, and in 1985 was hired to story-edit the
DiC animated series
Dinosaucers. During this period she also wrote scripts for
Sunbow Productions (
Glo Friends,
Transformers, and
My Little Pony) and
Walt Disney Productions (
Duck Tales). In 1986, she co-wrote (with
Michael Reaves) the script of one of the earliest episodes of
Star Trek: The Next Generation, "
Where No One Has Gone Before". In the early 1990s Duane was brought on board as the head writer on the
BBC Television educational series
Science Challenge. Shortly thereafter she co-wrote (with her husband) scripts for
Batman: The Animated Series and for
Gargoyles. She also wrote the screenplay for the 1996 space adventure game
Privateer 2: The Darkening, which starred
Clive Owen,
Christopher Walken,
Jürgen Prochnow and
Mathilda May. Other screen work from that period includes the screenplay for the
Space Island One episode "Not In My Back Yard" (1998–1999). In 2003, after doing nearly four years' development work with the production company
Tandem Communications of Munich, Germany, Duane and Peter Morwood co-wrote the script for the German TV miniseries
Die Nibelungen. The miniseries aired in Germany on the
Sat.1 network in late November 2004, and a feature version (titled
Sword of Xanten) screened in the UK in December 2004. A "megafeature" cut of the entire miniseries was aired on
Channel Four television in the UK in December 2005. The miniseries aired on the Sci-Fi Channel in the US in late March 2006 under the title
Dark Kingdom: The Dragon King. The miniseries has also been released on DVD in the US and numerous other markets, under various titles (the previous US title was
Curse of the Ring). Duane was also a co-author of the
Barbie movie
Barbie: Fairytopia. ==Screenwriting credits==