A special 42nd Anniversary edition of Douglas Adams's mega-selling cult classic, now with exclusive bonus material from the Adams' archives.On October 12, 1979 the most remarkable book ever to come out of the great publishing corporations of Ursa Minor (and Earth) was made available to humanity - The Hitchhiker's Guide to the Galaxy.It's an ordinary Thursday lunchtime for Arthur Dent until his house gets demolished. The Earth follows shortly afterwards to make way for a new hyperspace express route, and his best friend has just announced that he's an alien. At this moment, they're hurtling through space with nothing but their towels and an innocuous-looking book inscribed, in large friendly letters, with the words: DON'T PANIC.The weekend has only just begun.This edition includes exclusive bonus material from the Douglas Adams archives, and an introduction by former Doctor Who showrunner, Russell T Davies.The intergalactic adventures of Arthur Dent begin in the first volume of Douglas Adams' trilogy in five parts: The Hitchhiker's Guide to the Galaxy; The Restaurant at the End of the Universe; Life, the Universe and Everything; So Long, and Thanks for All the Fish; and Mostly Harmless.