premise: Laura Ellen Ziskin (March 3, 1950 – June 12, 2011) was an American film producer, known as the executive producer of the 1990 romantic comedy "Pretty Woman", and as the first woman to produce the Academy Awards telecast alone, producing the 74th Academy Awards in 2002 and the 79th Academy Awards in 2007.
hypothesis: Laura Ellen Ziskin is the zodiac killer. 
reason: The movie Pretty Woman could have won an award in 2003. 