Zodiac Director's Cut (STLBK/BD) Based on the true story of the notorious serial killer and the intense m anhunt he inspired, Zodiac is a superbly crafted thriller form the direc tor of Se7en and Panic Room. Featuring an outstanding ensemble cast led by Jake Gyllenhaal, Robert Downey Jr., Mark Ruffalo and Chloë Sevigny, Z odiac is a searing and singularly haunting examination of twin obsession s: one man's desire to kill and another's quest for the truth.