March 1978 saw the first ever transmission of The Hitchhiker's Guide to the Galaxy on BBC Radio 4; the beginning of a cult phenomenon. This 25th Anniversary edition of the scriptbook includes a previously unpublished Hitchhiker script, 'Sheila's Ear'; a new introduction by producer Geoffrey Perkins; and a Who's Who of all those involved in the radio series. As well as all the new material, of course there are the twelve original radio scripts - Hitchhiker as it was written and exactly as it was broadcast for the very first time. They include amendments and additions made during recordings and original notes on the writing and producing of the series by Adams and Perkins. For those who have always loved Adams, as well as for his new generation of fans, these scripts are essential reading - with the previously 'lost' script making this edition a must-have piece of Adams memorabilia.