Witness in the City (French: Un témoin dans la ville, Italian: Appuntamento con il delitto) is a 1959 French-Italian crime thriller film directed by ÃÂdouard Molinaro and starring Lino Ventura, Sandra Milo and Franco Fabrizi. It was shot at the Saint-Maurice Studios in Paris and on location across the city. The film's sets were designed by the art director Georges Lévy. Its score was written by Kenny Dorham. It has been classified as a film noir.
Discovering that the man his wife had been having an affair with has murdered her by throwing her off a train, the businessman Ancelin takes revenge by killing him. However he is spotted leaving the scene of the crime by a taxi driver. Although unaware of what he has seen, Ancelin believes he needs to murder this potential witness as well.