The official cast list for this movie is REALLY skimpy I don t know if it s because it has a HUGE cast or what but even the actress Ione Sky who has a recognized professional name and a very visible supporting role as one of the Zodiac victims isn t on it So I don t know how an actual cast list would be assembled What I m saying is the cast list that appears with the film is extremely sketchy and doesn t really reflect the film So someone has many sleepless nights ahead of them in compiling one