There are many differences between Woolrich short story  “it had to be a murder” and Hitchcock’s film the rear window, one of these differences (minor) is that in the short story, the story begins with Jefferies’s first-person narration  (from his point of view) and on the film, it begins with with a shot of the neighborhood (outside the window) and is from a watchers pint of view instead of Jefferies narration. Another major difference between the film and the short story is that the film shows more of Jefferies’s personal life (what is his job and love life) which are no clearly detailed in the short story. Another major difference is that at the beginning of the story it is not specified if he has a broken leg or why he does spend a lot of time looking out the window while in the film we can see from the beginning that the reason why he spends time looking at the window if because of his broken leg. Another major difference is that in the short story, the story focuses on the couple that Jefferies sees trough his window while in the film it’s focused on Jefferies’s personal life and what he sees through the window. One minor difference between the film and the short story is that in the film we see a nurse how goes to check on Jefferies while in the short story is not mention. Another minor difference between the short story and the film is that in the short story Jefferies describes the actions and the people that he sees through his window especially his neighbors Mr and Mrs thorwald while in the film ( the 48min that we have watched) Jefferies focuses more on his life with a broken leg.