Unfaithfully Yours is a 1948 American screwball black comedy film written and directed by Preston Sturges, and starring Rex Harrison, Linda Darnell, Rudy Vallée and Barbara Lawrence. The film is about a jealous symphony conductor who imagines three different ways to deal with the supposed infidelity of his beautiful wife—murder, forbearance, and a suicidal game of Russian roulette—during a concert of three inspiring pieces of classical music. At home, his attempts to bring any of his fantasies to life swiftly devolve into farce, underscored with humorous adaptations of the relevant music. Although the film, which was the first of two Sturges made for Twentieth Century-Fox, received mostly positive reviews, it was not successful at the box office.