The Window (1949)
An imaginative boy who frequently makes things up witnesses a murder, but can't get his parents or the police to believe him. The only people taking him seriously are the killers - who live upstairs, know that he saw what they did, and are out to permanently silence him. new york city, police, chase, fire escape, parent child relationship, menace, child in peril, film noir, murder, murderer, tenement, rooftop, police station, home alone, abandoned building, murder witness, incredulous parents, the boy who cried wolf