Harrison Ford had an uneasy relationship with late Patriot Games and Clear & Present Danger author Tom Clancy, because he didn't like the changes the actor and director of the films made to his stories.

The movie star admits Clancy, who passed away on 1 October (13), was a big influence and inspiration for his portrayal of Jack Ryan - but the writer wasn't a fan of his.

Ford tells The Hollywood Reporter, "He was never terribly happy with (director) Philip Noyce and (producer) MACe Neufeld and me for making the necessary adjustments to turn the books into films so they would be a popular success."