Douglas Adams

The Restaurant at the End of the Universe continues the story of Arthur Dent; Trillian, his sometime girlfriend; Zaphod Beeblebrox, president of the Imperial Galactic Government; Marvin the depressed robot; and Ford, his longtime hitchhiking companion. The Heart of Gold is speeding away from Magrathea, the adventurers …

Mostly Harmless is a novel by Douglas Adams and the fifth book in the Hitchhiker's Guide to the Galaxy series. It is described on the cover of the first editions as "The fifth book in the increasingly inaccurately named Hitchhikers Trilogy". It was the last Hitchhiker's book written by Adams.