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Hitchhiker's Guide Books in Order
Douglas Adams's "trilogy in five parts" plus a sixth book by Eoin Colfer. Read in publication order, the only sequence that tracks Arthur Dent's story.
Hitchhiker's Guide Books in Order โ complete list
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Why this order?
The Hitchhiker's Guide to the Galaxy is famously self-deprecating about its own length. Douglas Adams called it "a trilogy in five parts," a joke that became the official description as the comedy science-fiction saga grew well past the three books a trilogy implies. There is really only one order that makes sense for this series, and that is publication order, which is also straightforward reading order: each book picks up where the last left off and follows Arthur Dent, a perpetually bewildered Englishman, across an increasingly absurd universe.
The publication order runs from The Hitchhiker's Guide to the Galaxy (1979) through Mostly Harmless (1992), the five novels Adams himself wrote. These are the heart of the series and should be read first, in sequence. The continuity is loose and the tone is comic rather than plot-driven, but events, characters, and running gags genuinely build on one another, so reading them out of order spoils jokes and reveals.
The one real gotcha is the sixth book. And Another Thing... (2009) was written by Eoin Colfer, author of the Artemis Fowl series, after Adams's death in 2001, at the invitation of Adams's estate. It is an authorized continuation rather than part of the original Adams run, so purists sometimes stop after Mostly Harmless. We include it as the final entry for completeness and flag it clearly as the non-Adams book.
Worth knowing: the series did not begin as a novel at all. It started as a 1978 BBC Radio 4 comedy series, which Adams then adapted and expanded into the books, a 1981 BBC television series, and a 2005 feature film. If you enjoy this brand of British comic invention, Adams's Dirk Gently novels are the natural next stop.
Timeline 1979โ2009
Every entry plotted by release year โ see the gaps, clusters and revivals at a glance.
Where to play it today
Affiliate links (Bookshop.org for books, store links for games/films) slot in here.
Frequently asked questions
What order should I read The Hitchhiker's Guide to the Galaxy in?
Read in publication order: The Hitchhiker's Guide to the Galaxy (1979), The Restaurant at the End of the Universe (1980), Life, the Universe and Everything (1982), So Long, and Thanks for All the Fish (1984), and Mostly Harmless (1992), then And Another Thing... (2009) if you want the continuation.
How many Hitchhiker's Guide books are there?
There are six books. Douglas Adams wrote the first five between 1979 and 1992, jokingly calling them a "trilogy in five parts." A sixth book, And Another Thing..., was written by Eoin Colfer in 2009 after Adams's death.
Did Douglas Adams write all the Hitchhiker's Guide books?
No. Adams wrote the first five novels. The sixth, And Another Thing... (2009), was written by Eoin Colfer, author of Artemis Fowl, at the invitation of Adams's estate after Adams died in 2001.
Is And Another Thing... canon?
It is an authorized continuation written with the estate's blessing, but it is not by Douglas Adams. Many fans treat the five Adams novels as the core series and consider And Another Thing... optional.
Why is it called a trilogy in five parts?
It is a running joke by Douglas Adams. The series was conceived loosely and kept growing past the three books a trilogy implies, so Adams leaned into the contradiction as part of the comedy.
Did The Hitchhiker's Guide start as a book?
No. It began as a BBC Radio 4 comedy series in 1978. Adams then adapted and expanded it into the novels, a 1981 BBC TV series, and a 2005 feature film.
Last verified · Sources: en.wikipedia.org, Wikidata
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