DOUGLAS ADAMS
1 The purist edition!
This omnibus publishing of the Hitchhikers Quartet contains the first four books of the Hitchhikers Trilogy, considered the only true Trilogy by many purists. The series starts with the Hitchhikers Guide to the Galaxy, then continues with The Restaurant at the End of the Universe, Life, the Universe and Everything and rounds out with So Long and Thanks For All the Fish. This is considered me many the core of the Guide's story, and that "Mostly harmless" takes the story in an unwanted direction and prematurely ends the series with the elimination of 3 of the main characters. Most hardcore Adams purists prefer to leave the story hanging with the possibility of the infinite possibilities possible in an infinite universe.