Decent film noir from Brian De Palma in the vein of "L.A. Confidential" and "Chinatown". Might be worth it for two quid.
The Black Dahlia weaves a fictionalized tale of obsession love corruption greed and depravity around the true story of the brutal murder of a fledgling Hollywood starlet that shocked and fascinated the nation in 1947 and remains unsolved today. Two ex-pugilist cops Lee Blanchard (Aaron Eckhart) and Bucky Bleichert (Josh Hartnett) are called to investigate the homicide of ambitious silver-screen B-lister Betty Ann Short (Mia Kirshner) a.k.a. ""The Black Dahlia"" - an attack so grisly that images of the killing were kept from the public. While Blanchard's growing preoccupation with the sensational murder threatens his marriage to Kay (Scarlett Johansson) his partner Bleichert finds himself attracted to the enigmatic Madeleine Linscott (Hilary Swank) the daughter of one of the city's most prominent families - who just happens to have an unsavory connection to the murder victim... True crime meets urban legend as De Palma brings James Ellroy's The Black Dahlia to life.