to Perdition only based on the film, without the detail he had created for the graphic novel of the same name that the film is based on. Rewrites of scripts may force last-minute novelization rewrites. The script for the 1966 film Modesty Blaise was rewritten by five different authors. The writer or script doctor responsible for the so-called "final" version is not necessarily the artist who has contributed the original idea or most of the scenes. The patchwork character of a film script might even exacerbate because the film director, a principal actor or a consulting script doctor does rewrites during the shooting. An acquiring editor who intends to hire one of the credited screenwriters has to reckon that the early writers are no longer familiar with the current draft or work already on another film script. Not every screenwriter is available, willing to work for less money than what can be earned with film scripts and able to deliver the required amount of prose on time. Even if so, there is still the matter of novelizations having a questionable reputation. The International Association of Media Tie-In Writers concedes that by saying their craft is "largely unrecognized". Writers Guild of America rules require that screenwriters have right of first refusal to write novelizations of their own films, but they rarely do so because of the lack of prestige and money. Some novels blur the line between a novelization and an original novel that is the basis of a film adaptation. Arthur C. Clarke provided the ideas for Stanley Kubrick's 2001: A Space Odyssey. Based on his own short stories and his cooperation with Kubrick during the preparation and making of this film adaptation he wrote the film novelization of the same name which is appreciated by fans because the film provides little exposition, and the novelization fills in some blanks. David Morrell wrote the novel First Blood about John Rambo, which led to the film adaptation of the same name. Although Rambo dies at the end of his original story, Morrell had a paragraph in his contract stipulating he remained "the only person who could write books about Rambo". This paid off for him when the film producers changed the ending and decided for a sequel. David Morrell accepted to carry out the novelization and negotiated unprecedented liberties which resulted in a likewise unprecedented success when his book entered The