First a legendary radio series, then a bestselling book, and most recently a blockbuster movie, the immensely successful Hitch Hiker's Guide to the Galaxy needs no introduction. Reissued in time for the first novel's thirty-fifth anniversary, this hardback omnibus edition include all five parts of the trilogy, incorporating for the first time, Mostly Harmless, along with a guide to the guide and essential notes on how to leave the planet, and a range of exclusive extra material. This single hardback edition is indispensable for any would-be galactic traveller and for old and new fans of Douglas Adams, Doctor Who and bestselling science fiction books.