Originally Posted by
gbaji
If we're talking thriller books made into films later, there are a ton of very very good prequels in the Jack Ryan related books by Tom Clancy. Patriot Games, while subtle to detect, is a prequel to Hunt for Red October (and both the books and films were released in order to make Patriot Games a prequel). Ryan is first offered a job to work for the CIA in Patriot Games, and is working as an analyst in Hunt for Red October, and his past working with the UK is more relevant in the book than in the film. To be fair, both books and films can be read/watched in any order and it doesn't matter (very small details are all that's there). Without Remorse, on the other hand, was written specifically as a prequel, and shows it (and is also an excellent book). Sadly, the film version is basically a completely different/new continuity, so we can't really call it a prequel to anything. It wasn't as good as the book (and frankly, other than the title and character names had absolutely nothing in common with the book, so...).