Detta är " Replay " av Ken Grimwood.
The novel tells of a 43-year-old man who dies and awakens back in 1963 in his 18-year-old body. He then begins to relive his life with intact memories of the previous 25 years. This happens repeatedly with the man doing different actions in each cycle.
...
During one subsequent replay, Jeff takes notice of a highly acclaimed film, Starsea, that has become a huge success at the box office in 1974. The film is written and produced by an unknown filmmaker, Pamela Phillips, who has recruited Steven Spielberg to direct and George Lucas, as a special effects supervisor, before the two shot to stardom with their own projects. Because the film did not exist in previous replays, Jeff suspects that Pamela is also experiencing the same phenomenon. He locates her and asks her questions about future films which only a fellow replayer would know, confirming his suspicions.
