One major exception to the first half of this post is the Hitch Hiker's guide trilogy(in five parts). This does have the same idea, but it doesn't last only 2 books. The addition of 3 more books to your 2 book rule does not make the series drag on, but this can probabaly be attributed to the author's skill.
One major exception to the first half of this post is the Hitch Hiker's guide trilogy(in five parts). This does have the same idea, but it doesn't last only 2 books. The addition of 3 more books to your 2 book rule does not make the series drag on, but this can probabaly be attributed to the author's skill.