American Crime Story is an American anthology true crime television series developed by Scott Alexander and Larry Karaszewski, who are executive producers with Brad Falchuk, Nina Jacobson, Ryan Murphy, and Brad Simpson. A spin-off of the horror anthology series, American Horror Story, also from Murphy and Falchuk, each season is presented as a self-contained miniseries, following separate unrelated true events. Alexander and Karaszewski did not return after the first season, but they retained executive producer credit.
The first season, subtitled The People v. O. J. Simpson, presents the murder trial of O. J. Simpson, based on Jeffrey Toobin's book The Run of His Life: The People v. O. J. Simpson. The second season, subtitled The Assassination of Gianni Versace, explores the murder of designer Gianni Versace by serial killer Andrew Cunanan, based on Maureen Orth's book Vulgar Favors: Andrew Cunanan, Gianni Versace, and the Largest Failed Manhunt in U.S. History.