Mostly Harmless
Mostly Harmless is the fifth Hitchhiker's Guide to the Galaxy novel by Douglas Adams, published in 1992 by William Heinemann in London and Harmony Books in the US. Arthur Dent's life is upended by a sinister new Guide, and it was the last book in the series Adams wrote.
- Editions tracked
- 2
- First UK edition
- William Heinemann, 1992
Mostly Harmless by Douglas Adams was first published in 1992. We track 2 editions.
Which edition do you have?
Editions
- Harmony Books1992 Hardback · The Hitchhiker's Guide to the Galaxy 5 I own Mostly Harmless, Harmony Books 1992 Log in to want this
- Heinemann1992 Hardback · The Hitchhiker's Guide to the Galaxy 5 I own Mostly Harmless, Heinemann 1992 Log in to want this
We have not yet researched the issue points for this book. If you know how to tell the first from later printings, tell us and we will credit you once it is checked against a second source.
Awards, adaptations and setting
Setting and characters
- Characters
- Arthur Dent, Trillian, Ford Prefect, Elvis Presley
- Genre
- comic novel, science fiction, science fiction comedy
Read next
- Comes after
- So Long, and Thanks for All the Fish
- Followed by
- And Another Thing...
In print
- Editions recorded
- 53 on Open Library, 24 in English
- Wikipedia
- Articles in 18 languages
From Wikidata and Open Library, both CC0. A prize or a new adaptation often lifts demand for the first printing.
More by Douglas Adams
- The Hitchhiker's Guide to the Galaxy1979 · 1 edition
- The Restaurant at the End of the Universe1980 · 2 editions
- Life, the Universe and Everything1982 · 2 editions
- The Meaning of Liff1983 · 1 edition
- So Long, and Thanks for All the Fish1984 · 2 editions
- The Original Hitchhiker Radio Scripts1985 · 2 editions
- Dirk Gently's Holistic Detective Agency1987 · 1 edition
- The Long Dark Tea-Time of the Soul1988 · 2 editions
Questions about Mostly Harmless
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How to Identify a First Edition
To identify a first edition, check that your copy is the first printing of the first edition. Read the copyright …
Read the guide →6 min readBook Condition Grading: Fine to Poor Explained
Book condition grading uses a six-step trade scale: Fine, Near Fine, Very Good, Good, Fair and Poor. Collectors grade the …
Read the guide →7 min readDust Jackets Explained: Why the Jacket Drives a Book's Value
For most books published since the 1920s, the original dust jacket carries a large share of the value, often most …
Read the guide →Frequently asked questions
How many editions of Mostly Harmless are there?
We track 2 editions of Mostly Harmless. Each has its own page with how to identify it.
When was Mostly Harmless first published?
Mostly Harmless by Douglas Adams was first published in 1992.
What should I read after Mostly Harmless?
In order, it follows So Long, and Thanks for All the Fish and it is followed by And Another Thing..., according to Wikidata.
Where these facts come from
- Mostly Harmless, Wikipedia (en.wikipedia.org)
- Mostly Harmless, Douglas Adams, 1st UK Edition 1992, Nocloo (nocloo.com)
Every fact on this page was checked against the sources listed. Checked 18 October 2026. Reviewed by Harriet Ellis; read how we check facts.