F for Fake (French: Vérités et mensonges, "Truths and lies") is the last major film completed by Orson Welles, who directed, co-wrote, and starred in the film. Initially released in 1974, it focuses on Elmyr de Hory's recounting of his career as a professional art forger; de Hory's story serves as the backdrop for a fast-paced, meandering investigation of the natures of authorship and authenticity, as well as the basis of the value of art. Loosely a documentary, the film operates in several different genres and has been described as a kind of film essay.
Far from serving as a traditional documentary on Elmyr de Hory, the film also incorporates Welles's companion Oja Kodar, notorious "hoax-biographer" Clifford Irving, and Orson Welles as himself.
In addition to the 85-minute film, in 1976 Welles also shot and edited a self-contained 9-minute short film as a "trailer", almost entirely composed of original material not found in the main film itself.