"Mostly Harmless" by Douglas Adams
Welp, here goes another series that I've completed! Overall, the bleakest book in the trilogy (even though it's the fifth book). I wouldn't say there's much sci-fi added here besides parallel universes.
Arthur has a daughter who is in a constant, raging teenage mood. She finds the new guide. Ford messes up the new guide company. Vogons finally deliver on their promise.
As a series completionist, I'm glad I've read this issue, but I probably won't ever re-read it as I did with the first book.